Just to clarify, if a Biochemist uses Pots for their skill potion pitcher, its completely ok. As emeralda says, suchs things are threatend as catalysts, since you dont "use" them itselfs, but the skill you use does.
Also, yes i find potting in terms of using hp/sp recovering items in pvp noobish, as well as many others i guess. However, if you think its right, just go ahead and keep doing it, thinking your a real master of your class, because you have more money to buy pots than others.
Im done.