Hi David!
If you’re still monitoring this is it possible to give a long term update on how the Shi bearings have been performing?
Im waiting to hear from a couple of suppliers to see if Faveros Mx Pro Bodies fit the Shi - just to keep everything on brand 
In the Velo Q factor article referred to, they said
Shimano’s off-road-going SPD (two-bolt) pedal platform uses an axle with shorter proportions and also isn’t at all compatible (probably for the best – the power pod would likely come into contact with rocks …).
Is that something you feel has or could be a problem?
THANK YOU