Forced to help Kneepads of Allure

[Michiel]

When you are assigned to help by the player with the kneepads of allure you are not allowed to ask for a reward. This is helping with your strength of course.
Is the helping player allowed to ask for reward for the fact that he/she might use some buffs.

So for example: "I will use my +2 potion if you will give me 1 treasure" given the fact that the bad stuff may not strike the helper (losing certain gear i.e.)