No

Simply based on the interface and goal of the Ubuntu TV.

Ubuntu is the only open-source OS designed to provide consistent user experiences across multiple diverse different form factors, from the PC to the smartphone and the television.

Source

The Ubuntu TV interface is a Desktop Environment designed to emulate (and built on top of a fork of) the Unity-2D. Since the Unity interface is Canonical's consistent user experience in the computing world the thought of re-designing Ubuntu TV to mimic other Desktop Environments will likely not be on the short list of goals for Ubuntu TV.

Only time will tell, but other DE maintainers such as KDE, XFCE, etc may develop and modify the Ubuntu TV to mimic their style Destkop Environment.

Firstly, UbuntuTV is currently a demonstration product. However, Canonical is a UK-based company with international appeal - the screenshots of the demonstration EPG have UK channel logos in them. The UK is in the process of converting to entirely digital TV broadcasting, so it would be odd for it not to be supported in the finished product.

As a UK MythTV user for over 5 years, DVB-T has worked really well for me. I found it much easier to set up than analogue tuner cards, especially in more recent releases of MythTV. It's also far less CPU hungry than using analog tuners.

My current MythTV installation is still running off the Mythbuntu Jaunty (9.04) release at this current time, and I'd expect it was even easier in newer releases. I'd encourage you to give MythTV another try, since UbuntuTV will not be released for some time.