I am actually more worried about damaging the PCB, since switches are easy to fix. A high front edge could interfere with typing like you said, but should be ok on the sides and back. A slightly taller front edge reduces the area where it could catch on something. Perhaps it doesn't matter, but I would want to stick this in another case before sticking it in my bag. I do like the floating keys look with the low edges though.
If Vortex is making the case available separately, then it doesn't matter about LED. You can just put it on whatever you want, Poker or Pure. Originally it seemed like only the KBT anniversary would be getting the aluminum case (unfortunately only with LED and MX reds).