I only have the 170mm cranks in ISIS, on my Muni. My trials is still the 10 Spline.
You can see mine here: Custom Qu-Ax unicycles - #89 by forrestunifreak
It might be a little difficult to tell, but there is no ankle nubs whatsoever. I also met a couple people in Moab who had new QU-AX ISIS trials uni’s that they bought recently from UDC; they had no nubs.