Actually looking around a bit I think I'm going to hold off until I know more. I just came over from the RAZR world where we had SafeStrap, a modified version of TWRP that allowed multiple ROMs. Even though I have 2.6.3 TWRP installed I hadn't noticed that it doesn't have the multi-rom feature. Glad I didn't try to flash any ROMs in this setup. I hadn't tried yet because I see that the KK ROMs can be problematic on the non-beta TWRPs. That, and I haven't touched CWM since I had a Droid X2!
HTC Droid DNA
Motorola Droid RAZR xt912, stock, rooted