OK, I love SIP. But sometimes I hate them. I bought a set of "SIP 2.0" aluminum tubeless rims from them last year; they sat in my garage for a while until I got around to buying some Pirelli Angels to mount on them. I took the rims to the local cycle shop for mounting. The shop calls me to tell me that one of the rims won't hold pressure, it's because the idiot who tapped the valve stem hole overshot the mark and there were no threads in hole for the valve stem to grip. Indeed, that looks to be the case. The valve stem comes out with a slight pull. So I had the shop remove the tire, so that I could mount it on some other rim, but they couldn't get the tire of without breaking the internals of the bead, ruining the tire.
So I am out the cost of the rim; the cost of a tire; the costs of mounting; and I have one tire mounted on the other rim rim that doesn't match anything else I have. AA+ repair, yeah.