Good to know about the nomads, I might pass on them now. I love the OJ II combo 95a 60mm. They’re fast and grippy, but they’re also super wide which I’m not always in the mood for. I saw there’s some new 57mm 95a OJ team riders, I’ll definitely grab a set of those if my local shop gets any.
There’s one park I frequently skate that’s covered in several layers of graffiti, so it’s very slippery. I always have a set of 95a wheels that I’ll put on just to skate there. 95a is the perfect balance of grip and speed when it comes to slippery parks, but you are also very correct that formula/brand matters just as much if not more than advertised durometer.
I was keen to get a few sets of the 56 or 58mm 95 duro Natas wheels. Ended up being very popular and I can't keep a set on any board that people like to try, as they are so keen to buy them right there and then, so yes they are a good wheel for the more normal rider in that category.
Still hadn't actually skated them more than a quick roll around on everything (and they worked well) but the guys who bought them still like them, so that is what I am basing the positive answer on for those ones.
What's the point of the SPF if they aren't good on indoor ramps? Are even the softer SPF not very grippy on indoor ramps?
Some people love them on everything. Others find them too slippery on many surfaces. It is just down to what you prefer and how you like your wheels to slide or stick.
The B range is said to be 20 points lower than the A range, so if a wheel is 81B, just add 20 so it would be 101A, but as there is no true A rating over 100, that whole thing kind of goes out the window for durometer.
81B = 101A
84B = 104A
Any wheel over 95 to 97A and certainly over 99A is going to be quite slick on slippery type surfaces, but those with good balance and don't push too hard into things love them for how fast they roll and how much they can easily revert tricks that anyone else might be slipping out on constantly.
Most pro vert guys are very accomplished skaters, so they have no problem skating those sorts of wheels on anything, but the more average skater who rides them could very easily be on the end of a slip and slide more often than not, if they are not so well balanced, be it a stick thin kid or a solid man beast.
Seen pretty much all of the categories of skaters with concussions, whiplash or broken bones from riding "normal wheels" including Spitfire Formula Four, Bones SPF, OJs, Pig and many others on slick vert and other ramps at the old indoor park when they slipped out on that ramp surface.