I think visually that it will be a hit, performance for the typical buyer will be great. Off road performance will be where it either shines or flops, although I doubt they care much about pleasing the 1-2% of people that would use it that way. I also expect it will be rather difficult to afford for the average buyer, if it rivals or, most likely, exceeds the Denali trim level. If it stays under 70k ish, which I doubt, I'll cheerfully trade the current wheels in for one after all the hubbub dies down.
Since it's to be loosely based off the H4x design, the big question is will there be a T version? If the General really wants the EV market they need a full size truck with a minimum 500 mile range and doesn't look like something left over from a really bad sci fi movie (Tesla).
If they built an H2 with the H4x styling with specs to match I doubt they could build them fast enough. When I had an SUT nearly every single guy wanted it except for the 'if only it had a real truck bed' part.