I know Miche is ISO and Sh is JIS. But I also know they have the same taper angle, only one is the chubbier part while the other is the slightly thinner bit of the same cone shape.
I may get a Miche crank (keep your fingers crossed for me) and I don't want to buy a new BB if I can avoid it.
"ISO cranks (Campagnolo, Stronglight, others) won't go as far onto J.I.S. spindles as they ideally should.
J.I.S. cranks (most Japanese models) may bottom out if installed on ISO spindles.
In practice, you can very often get away with mixing these sizes, as long as you select an axle length that gives the desired chainline."
I think I read on his site that ISO crank on JIS BB is the better combination for mixing... so it seems like a pretty safe experiment to try. Also, I'm very light at 124 and ride carefully to protect my parts, so it's not like a 200-pound jackass will skid the crap out of it.
Has anyone here done this?