It depends on the coating, but in general no. Laser printers use heat to fix the toner to the paper. It is quite possible for the coating on the paper to melt, destroying the printer. Unless the paper explicitly says it will work with a laser printer, best to just avoid it.
Toner costs much more per purchase than inkjet ink, but each cartridge lasts much longer so per page they are considerably cheaper. Some cheap lasers aimed at the home market do not work out as cheap (sometimes noticeably more expensive than other lasers) per page, but will still beat a 'jet in the long run.
If you do very little printing, then the inkjet will win overall but if you do a moderate amount or more even a cheap laser will work out cheaper in the long run. But if you only do a little printing there is another noticeable factor against inkjets - they tend to gum up if left alone for a couple of weeks so you end us wasting half your ink doing head cleans next time you use it - bringing the cost per page up higher. My last Epson was terrible for this, and it wasn't a cheap grotty model either.
On good photo paper a good inkjet will produce better photo results than a cheap or mid-range laser, often better than an expensive model. But that again brings up the cost considerably, and on normal paper (standard 80gsm/90gsm stock) all but the cheapest lasers will win out these days. And if you plan to print much plain text (letters, documents) again the laser wins (you don't want to use good photo paper to get crisp text from an inkjet when you can get the same text quality on standard stock out of the laser.
There is also the problem of speed. Never trust an inkjet's claimed speed. My last one claimed "up to 20 pages/min" but it couldn't even pass blank paper through at that rate, and its highest speed setting wasn't worth bothering with. That lovely full page photo could take a number of minutes to create - my laser will kick its version out in seconds. I would doubt the pages-per-cart claims of inkjets too, especially for colour output as nth figures are based on colour text not blocks of colour like a chart or photo, much more so than lasers which in my experience get much closer to their rated output per cart.
These days I go with a colour laser, my current one is a Xerox 6125 which I got a good offer on last year (lower price and free toner carts, which brought the effective price below the cheaper units I was considering) and have been very happy with it, and if I want a few more professional quality photo prints I take the files to Boots or Tesco and use their facilities or self-serve printing machines. What I used to do was to have a B/W laser for docs/letters/draft and a colour inkjet for anything that absolutely required colour.
Don't get the cheapest colour lasers as they sometimes have noticeable banding issues in colour output and once you tot up all the consumables (check how long the drums last before needing to be replaced as well as the toner) don't work out a lot cheaper than jets. If you can get print samples of plain text and business graphic (text with relatively flat colour like charts and such) and photo output for any model you consider just to be sure. My Xerox 6125 has decidedly better photo output than my brother's Samsung 310 (though the Samsung's photo output isn't terrible, its basic colour output fine, and b/w output no worse than the Xerox).
Two other points to consider: a laser will be much quieter, but most colour lasers are significantly larger and need more space around them for ventilation.
Best Answer
I used to work on Ricoh's (and Gestetners, and others).
I'll admit right off that it's been a bit since I've touched one or played with a Windows machine connected to one, so bear with me please.
Quiet often, I found that the color tab went away if the application (or user) chose 'B/W output' vs 'Color Output' in the 'Printing Preferences' tab. (yeah, the OTHER one). Selecting 'B/W only' causes the driver to drop the color options. Since this is a per-application setting, it could happen and not be affected by driver reinstalls.
Other things that come to mind, it's a networked printer, so each computer SHOULD be printing directly to the copier, but it's possible someone has connected to a shared printer on someone's computer which had the B/W option set... this would cause the B/W to propagate to their system. Just something to be aware of, gotta love those helpful users.
Kinda one of those situations where if I could SEE the option panel it might strike a chord, compartmentalized memory and all that. Too much stuff in my head! :)