200km on mine so far… No creaks, groans, mis-shifts or anything bad to report… So far it has just got on with being a cassette…
Loving the 44T bottom gear on my full sus, only used the 9t once to check it even goes in it! To be honest, a 10-46 would be better for me and allow me to run a 32T instead of the 30T I’m running currently (this is on an Evil Wreckoning 160mm travel 29er mind, which doesn’t have the chainstay clearance for smaller chainrings).
The only negative so far is the mid range gears feel a bit spread apart, but then that’s the nature of the beast with a wide range setup. The 9t works but is a bit of a gimmick, but if chainstay clearance isn’t an issue and you need a roadie spin gear, then it’s a bonus.
Personally I think as soon as Eagle comes down in price slightly, I’ll be on it. The 50T bottom gear and even spread al the way through the cassette will allow me to run a 34T chainring for the chainstay clearance I want, and give me more than enough spread of gears too.