It’s fitted to a hardtail, so no reason to think it will work any different IRL to on the stand! But yes, will update.
Saved a tiny bit of weight too – XX1 rear mech was 244g, XTR was 222g. XX1 Grip Shift was 89g, XTR was 104g, grips were exactly the same as I went from Chunky to Racer’s Edge ESIs. So a whopping 7g saved. Will fit alu clamp bolt into the shifter at some point for pimpyness, probably take me to a monstrous 10g saved.