PLDs really shouldn't give up their shields, but they can't keep up with DPS to keep hate.
So how about let them use 2H weapons in their main hand and still keep their shield?
In other games it's called monkey-grip. Calabolg + Ochain = 45 Vit for Torcleaver as well as defensive stats.
PLDs might be able to do their jobs and possibly have more fun doing it.