I’ve got one, a triple.
Good – light weight, nice finish (I reckon), good shifting, seems quite stiff
Bad – it only takes a kcnc bb which has the worst sealing known to man plus you need to loctite the cranks bolts else it works loose (common problem if you google it)
Would I get another? Probably not. Its fine for dry rides ( or races) but I’m forever worried about the cranks dropping off and carry a 10mm Allen key around just in case, and I’m not a totally rubbish mechanic so I don’t think it’s my install as I’ve seen other threads on the same issue.
Meanwhile my xtr cranks are superb! Shame as I generally like kcnc stuff