I have looked into this quite a bit, here’s my review of the hybrid Bontrager Jones 29x2.25 that I found to be great on camber. You need to run it at low pressure though, which is actually very suitable if you’re going on and off road like me. When you pump it up it becomes unpredictable again, though still rideable. But when soft it almost eliminates sideway pull even on quite severe camber, don’t know why, there’s obviously something in its geometry that just works.
As for the Big Apple, this also is dogged with the sideways pull problem, although it is the opposite effect; at low pressure it pulls but high pressure you can reduce it. It even says so on UDC so it must be bad, never tried it on a unicycle but have tried it on a bike and noticed the effect.
Hope this helps.
Andy