I've heard from a few excellent builders that stainless is just a huge pain to work with...unreliable supply, difficult to cut, difficult to join. I believe Firefly is phasing out stainless, but maybe you could ask super nicely for it.
fwiw, My stainless (Reynolds tubes) Kirk is really nice.
Snappy, smooth, light-ish, exotic, pretty, and I don't have to worry about any paint.
I like titanium bikes for the same reasons, and there are way more titanium builders out there.
