So I've been doing some swatching, and I've learned why people do F/iB (and iF/B) instead of F/iF (or B/iB) ;) - it keeps the lines from the loops not being working in on just one side of the fabric, instead of both (not a problem working in the round, though). It can be a nice look, but the horizontal lines kill a vertical pattern. Going through both loops, alternating regular and inverse (call it SS/iSS), also solves the problem, but makes for a bit bulkier fabric.
Anyway, the front (non-lined) side of F/iB (and SS/iSS) has a nice vertical pattern that would serve well as the slip stitch stockinette equivalent. The back side has a horizontal pattern that could work ok for reverse stockinette, but I think I like the look of the non-lined side of B/iF better. Might depend on the application which works better.
I'll eventually get pics up - right now my swatches are especially rough ;).