To answer your earlier question though, they’ve been running the SBS XD40s on the B41, B2, and B31 since FLA replaced those XD40s with the articulated buses on the B46 SBS.
You’ll only really see them on those three routes since FLA wanted to avoid putting them on the B44, 46, and 49 (so folks don’t accidentally get on thinking they’re the B44 SBS or B46 SBS).