Well... on the traction, ridge grappler thing, I did Top of the World in the dead of winter with a foot of snow on BFG KO2s. That's not to sound like i'm one-uping anyone, but having wheeled extensively across the world, and I love Moab, but it is grippy everywhere. Plus the rocks typically don't like to move around there, for the most part.
I guess i'm looking at the worst wheeling surface I have seen, east coast mud covered rocks that can also move around, and did I mention they are slippery. For old school guys, Tellico.
I really want these ridge grapplers to work for me, because I want to run 285/75r17 (even though I don't think they will work with RWs and no sway bar relocation) but from what I saw recently, I wasn't impressed, but again, just seeing if anyone has put them in clay/rocks, mud/rocks, hill climbs that has endless loose crap to them.