Mine came in yesterday, and he's as eye catching as I'd hoped he'd be.
For some reason I imagined the under suit was going to be rubbery, so was pleased to find it was a regular material. Though it seems thicker than on earlier Stormtroopers, and really restrictive for posing.
As much as I love the flame effect I just couldn't get him into a satisfying enough pose with it, so went for the hero pose (as in Rbeato's first photo). It took quite a bit of effort getting his arm into position, and at first didn't even look possible.
One continual complaint I have with Hot Toys is the wire in the stand being too loose, and barely offering much promise of support. There isn't enough friction to prevent the wire from easily dropping back down inside the support.
One last observation: after I set him up I realised his abdomen is really long, especially compared to his on-screen counterpart:
Before adjusting his pose there was even a gap showing between the abdomen and chest armour. Afterwards I noticed the same gap in a few of jedibear's photos: