that issue on the ojs looks mad!
I'v been on the 58mm lance mountain F4 conicals for a year, now and I love them.
They have shrunken quite a bit but they are fast and lock in safely (well, they are large and square)
best thing is they seem to be fitted much better than stfs, the bearing sacers line up perfect ly within the wheel and i can tighten the nuts to just get rid of the wobble. The stf would (same bearings & spacers) slow down on three of the 4 wheels.
I feel like they just slide the smoothest and keep speed on most terrain.