Definitely agree on SG vs. TiAg. I find it interesting how few TiAg 1-series seem to be out there in general.
Mineral Gray is the closest to SGM that I've seen on an actual car (see pic below, looks very SG in that pic) and I think it looks fine with the black mirrors, though it's a bit darker color and thus the contrast is less noticeable.
Btw, I like how this thread has basically become a support group for those of us waiting to get our damn cars...hopefully on Monday! Got my smoked amber-gones ready and blackline LCIs and Lux 5000ks on order so I'm getting antsy...