If it is someone who doesn't have good feedback here then I'd be reluctant to use anything except for paypal, I know with many transactions both ways that I have done here DD is common, but that trust is built over time.
If you are uncomfortable with DD then don't take that leap. If you are uncomfortable with it due to the info needing to be provided ie bank details, as far as I am aware there is not a lot a person can do with it, a scammer might try and call the bank to gain access or whatever but the banks are onto this sort of thing and have measures in place to stop it. Even my regular savings account which I have used for 17 years with transformers sales and purchases has other numbers required to gain online access to, and in a branch you need the physical card.
I still function.....................while killing threads. ;-)