The polo bikes I've seen here (PNW) are geared in the low 50s GI, tracklocross bikes are in the low 60s.

Personally, I hate flat bars. I recently bought a hotmess of a POSeidon FX. It kinda forces you into a flat bar with the low headtube and pre-cut fork for a slammed stem. Oh yeah, the fork blades also rub against the rotor if you corner hard.