[QUOTE=Volk]Oooooo thats why my druid had such a problem with gaining levels, thats kinda.....well bad towards classes who summon.
No you dont need to use a henchman, but theres a lot of bonuses for that, including the cool items they give you, and the experiance loss with a henchman alone is minimal.[/QUOTE]
Well - you don't need to travel with the henchmen to get his/her questrewards.
Simply pick them up occasionally and talk to them, and then drop them afterwards.
As for exp-loss, I've only done some superficial calculations (nothing to complex, but simply keeping an eye on rewards in the game), but so far it seems that for each extra "element" (henchmen, summon, familiar, companion etc) you have in your "group" the game treats you as if you are 1 level higher then you really are, in terms of giving out XP.
For instance, if you are level 3 and you solo get 100 EXP from a monster. Then by adding a henchmen the game will give you exp as if you were level 4. Add a summon and the game will give you exp as if you were level 5.
This is not a problem later in the game, where the exp reward difference between level 14 and 15, but it can slow your leveling in the ealier levels where there is a relative larger difference between the exp rewards of a level 3 and level 4.
You don't need a henchmen, although I personally always use henchmen in SoU and HotU. My usage in the original NwN is rather limited because of the easiness of the game (with the right equipment
) and the rather boring henchmen.