I've red horror stories that this soft rubbery plastic is prone to rips and tears, hopefully they fixed that problem, because this figure does look dope as hell.
I heard it's mostly paint rub/scuffing off the rubber material, supposedly they fixed the issue but besides different paint IDK what they claim to have changed.
Wonderful review! I think those grip hands you asked about are for interlocking his hands together for a suplex. In grappling, its referred to as the 'S' Grip.
To me, Shinkocchou Seihou Tiga Power-Type fixed alot of the issues that Multi-Type had on it's initial release and has set this subline up for some truly special releases! I cannot wait for Ultraman Gaia later this year...