IMO, the purpose of this is to see if people are willing to scam a scammer and if anyone is willing to do anything about it (leave negative trust).
Isn't the answer to that question already obvious? "It depends".
If 3-People scam then they will all receive different reactions.
If (almost) anyone else were running this experiment I would happily take the "loan" to aide in your research with the caveat of neutral feedback or no feedback, but given your current standing (inb4 hypocrite) I feel like participating in this might assist you in scamming members in the future.
I don't think this is about a "protected" person possibly scamming. I think it is more about what would happen if *anyone* scams TF.