The new potion behaviour just sucks.
Running a self sufficient Barb has become a nightmare again (remember lesser restore?) only this time we have curse and fear pots we cannot use when raged.
The only potions that you should be able to use on someone else is remove paralysis, cure wounds and lesser restore for those helpless situations.
Rather than helping make groups more self sufficient and less of a need for a cleric in group this new behaviour just penalizes those who do try and be self sufficient and makes the need for a cleric or wand whipper even more necessary.
When I go to buy my potions give me the option to buy with a funnel or without. If I buy without a funnel then I get the old style pots that are only self use (behave as per original potions).
If I want to be a good samaritan and carry pots for others (I won't unless one of the three scenarios above, up to everyone to be self sufficient) then I'll buy the funnel ones (that behave like clickies).
How hard would it be to add the original pots back into vendors lists and add a (with funnel) after the new ones in the list?