I still have one in a parts bin. I often wonder how it would work on my Transition Patrol.
Besides the weight, the thing was amazing. I’m not usually in a rush to get to the top, so a “little” drag didn’t bother me much. I had it on my Commencal Supreme (mini DH, 160mm). Would swap wheels and fork for park days (Totem and Mavic 823 or 36 Talas, never used the dial, and Flow Ex’s for pedal days).
Had a short cage derailleur, Flow wheels had an 11-28 cassette and the Mavic’s had an 11-21. Never any issues, always shifted when you wanted and rounding a corner with a steep uphill was never an issue as I would shift the HS and not worry about the back.
One day when finances allow, I’ll build up a 2X1 hard tail for pump tracks and riding with the kids.