I would trust my socmates totally in this. Like other posters have said... if you don't trust your socm8s you're in the wrong soc.
I would even go as far as to do this with other ppl not in my soc,
if I knew them well. There are some ppl (non-socmates) in the game who I trust enough that if I had, oh I don't know, an adj fap say, I would be happy to lend it to them without collateral, knowing I would get it back. Not many, but some.
And I did go on a hunt with some ppl from a different soc to my own at the weekend, and we did the "share out the loot afterwards" bit. Again, I had no qualms about doing this because I trusted them.
In this, I think trust is a 2 way process. It has to be earned, but it also has to be given. I'm not saying go out and lend your korss to any old OJ you see. But you have to give people a chance. If you never trust anyone you won't get ripped off, but you also have a barrier to a strong friendship IMO.
And I also think that trusting someone is a great compliment. A reward for their honour if you like. I know everyone in my soc would always behave with honour, and never try to cheat someone outside the soc, never mind another socmate. I repay this honour with my trust.
Hf