I am having the same issue with mine. Wiped, installed ROM & gapps, reboot, then got stuck on the Motorola logo for almost 40 minutes before I pulled the battery. This time I installed just the ROM (can always go back and flash gapps later) and it's been sitting for close to 20 minutes. I'm quite happy with my current ROM, so I was only installing this one to check it out for a little while. I'm sorry, but I'm not gonna sit here forever waiting on my phone to boot just to play around with this ROM.
Anyway...
One thing that crossed my mind is this. My phone is pretty much brand new, as I bought it less than 2 months ago. Could the newer Triumphs have a different baseband or some other firmware/internal "component" that is incompatible with this ROM? I only ask this because I seem to recall that the baseband on some of the Optimus V's was incompatible with some ROMs while working fine with others.