I assume you're not aware but FC is a ppm and it doesn't matter on which weapon you put it on. As for razorice there's a very tiny amount of extra dps you'd get from it being on MH. Also 1.5 weapons should absolutely never be considered. As for HB it's still useful for the 1 point you spend on it.
Yea I know, I use razorice main hand on my PVE set. It is so small extra dps that even isnt worth mentioning. About 1.5 wep. i was referring to guide that mentions 1.50 weapon for fast cinderglacier procs. Also HB makes sense only if you use runes just for it, which I personally don't prefer.