I'll have one with everything on it......almost. This frame has sliders, a belt splitter, disc brake setup, P-30 BB shell and a 44 mm ID head tube for a tapered steerer fork. Is it light ? Not really, but set up single speed the bike should not be heavy.
I put some solid tubes in this frame to hold up to commuting and lots of trail miles. This would be a really nice rig for the single track uphill from my shop at U.C.S.C. upper campus.