Well I think Westbrook actually prefers the unlocked zoom on the 30s over the full zoom on the 31s and not really for traction reasons..
And while I have no problems with retros, I do not merely mean traction but overall quality. Like PJ Tucker seems to be using general release, I don't think he is a big enough player with a good fanbase to be getting his own retroes that are far better built and dude pulls out retroes that are like 10 years old at times.
Plus yes those shoes were advanced when they first came out... but that was when they first came out.
I think you are honing in too much to the traction and that they'd be looking for something worse if they wore the version with clear sole, majority of these players probably get it with a solid outsole without requesting, chances are these guys won't have problem with the traction because they play on perfect hardwoods.
Jeff Green was playing in XXXIs w/ clear soles at times and it wasn't until recently til Biyombo got some PEs (along with other players iirc), I think he was mostly playing with GR version for the most part of the year.
And as for my reference with retroes or non-bball shoes (like Thabo playing in AirMax), the point was some of these NBA guys could play in anything and still perform on NBA level.
At the end of the day, this discussion is probably moot and anyone who wants to try them should just, well, try them and if they slip and crack their skull then at least they'll be able to get that 20% off code from NDC