Personally. I donate if I find the product useful, and I think deserves a donation. If I am not able to use the product, then it kind of kills any motivation of donating. You get more flies with honey than vinegar. Using the "give me money and i'll let you try it" ideal probibly isn't the way to go.. but, this is his skin, so who am I to judge.
I'll donate when it is released and I can actually try it.