Fioroni has had a sliding clutch out for a few years...also werks has something similar. Both tunable. You may also want to check into those to weigh your options.

My clutch bell bearings have been good the past 3-4 gallons of fuel. I've had the same ones since I bought my P5 over 6 months ago.

oh and I wouldn't say "their won't ever be 45min a-mains in this region" no one knows the future