I don't play 2h all that often outside of duel (I usually play polearm or 1h in battle, since I prefer to frontline in meatgrinders), and I can't say that I find the 2h stab to be all that annoying.
I find using the stab on long one-handers versus fast, erratic opponents to be far more irritating, in addition to using the stab on heavy polearms versus the same. In both cases I usually just resort to stabbing in the air and dragging down, while attempting to turn and strafe to keep the stab aligned.
Using the poleaxe stab around teammates is like trying to use a sledgehammer to swat a fly in a fine china shop. On the plus side, I have become really adept at quickly typing 'sorry'.