No. I am saying that buying or selling anything levels up a thief skill. Speech. So only a character who never bought or sold anything could play using only "warrior" skills (or only "mage" skills). That doesn't seem terribly feasible to me, although I suppose it is technically possible.
Personally, I don't find enough potions to take care of all my healing needs (I do not use any healing spells). So that means I need alchemy to brew my own potions, which levels up a second thief skill. Alchemy.
BTW, if you never buy or sell anything, then why do you bother collecting gold?
i was referring, specifically, to this particular gameplay method, if, i was to try it with a the warrior-only skills.
like the "pure" thief it would be tough, but, i have never on any character needed to buy healing potions or anything, really. it's all just to spend some gold.
i don't think buying levels speech. though, smithing and looting would take care of that aspect.
later, i'll definitely try this style of gameplay with all 3 types on DID runs.