It is always good to use a trusted escrow if the campaign is posting by a newbie user but if they do not escrow then no one can force them either. The participants will join the signature campaign with their own risk.
An escrow is def good, thats why we have chosen game-protect, the name says its all "game" and "protect", everyone wins.
The whole idea to have an escrow is that you do not want the community to ask question about the fund for the campaign. You want the community feel safe that whoever will participate in your campaign, they will get paid. But you have picked someone as your escrow who has tons of negative feedback (trusted) from users which will create a lot of drama in the community (from the posts above I see the drama has already in play).
I never had a chat or never used any service from game protect so I personally have no stance for him/them but having a lot of negative feedback does not look good under a profile.
Here is a fee suggestion for you: You do not need to use an escrow if you really want to go with game protect. It will be a waste for the fees you will pay him/them.
If you are really serious about escrow then use someone who has existing escrow service in the forum and well trusted with the money. For example: Use
DarkStar_. He has the lowest fees (I think) and he is one of the multiSig wallet key holder of the 500
BTC the forum has.