How to merge multiple PDF files onto one page with pdftk

A simple solution would be to use only pdftk in the following way:

pdftk A=odd.pdf B=even.pdf shuffle A Bend-1 output merged.pdf

This also works if odd pages are scanned first and then even:

pdftk A=file.pdf  shuffle A1-X Bend-Y output new-file.pdf 

where X is the last odd page and Y is X+1.

I can't seem to see anything that allows you to select a range (Seems like a deficiency, you should put in a feature request)

However this seems like a decent workaround, from the man-page:

multistamp < multistamp PDF filename | - | PROMPT > Same as the stamp operation, but applies each page of the stamp PDF to the corresponding page of the input PDF. If the input PDF has more pages than the stamp PDF, then the final stamp page is repeated across these remaining pages in the input PDF.

So create a pdf with a blank first page and on the second page put your stamp. Then run that file using multistamp