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 he would lend to you anyway, not with your current trust level.
No red trust for obvious reasons.
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.
It's an interesting experiment, but the value of it is eludes me. TF won't lend to a member with red trust, so it's almost like he wants, or needs a member with a good or neutral trust score to scam him for the experiment to work. And if or when that happens, what then? Does he expect DT members to stand by and not tag the scammer?