Plus Niner's SIR and MCR. I'm building a Kermit green SIR right now, single speed, full rigid.
The SIR frame is nice but not even close to the quality of the older steel frames i'm lucky enough to have. Fat Chance, Yeti FRO, and my Marin TET all have the vent holes brazed closed, excellent welds and the style that you can only get from modern custom fabricators.
Few remain that remember the riddle of steel...