Thanks a lot.
I'm a lower-end 4.0 who currently uses a two-hand backhand to block returns. But I a have a decent 1H backhand groundstroke and try to switch to one hand on returns. I play against 4.0 guys who have heavy first serves (by my standards).
With what you just explained, it seems to me that I should use a conti grip. It would have the added benefit of also improving my backhand volley technique a bit.