i use them ALL the time. i keep pickmeup or restoration, razor cloak or dracon breath and stamina pots in everyone's window, altho it's getting awful with my bard.

it seems i only have enough room for hvy stam for her now.
oh yeah! don't forget "magic nectar" in both my caster's inventory, too, and i try to keep a cure poison if the space allows it.
i dislike wasting 1 round to "equip" then a second round to drink. so, this is the best solution for me. i also keep spare arrows/stones/shuriken (depending on whose inventory it is).
i have been running into really looooooong battles and before we can med, having another battle find me! with my priest pooping out in the middle of a second or third attack, this is how the other girls help her out.
i love all the potions! i try them all out, too, so i can see what happens with all of them.
V***V