for me, I would never do this - this would mean giving someone possession of my collectibles. I see this as the same sort of fallacy as trusting an exchange to be your wallet. It's all good till they have 10 million in physicals that they loaned out 5 million for and then they up and disappear. And that could easily happen in the crypto space. And it has happened many times. Sorry, once you give up your keys, it ceases to be your crypto. You are essentially selling your item and hoping to eventually buy it back once you pay off the loan.