I think his mean to say payoneer is reversible wallet.
The mode in which I would transfer the funds from my Payoneer account to another person's Payoneer account is via the "Make a Payment" service. It's not all Payoneer account holders that are eligible to use this service, I'm eligible because I'm a freelancer that has been getting paid by one of their partners. Also, both the sender and receiver accounts must have the "Make a Payment" tab in their respective accounts before they can make a transaction.
Now, when a sender sends funds to another person via this service, Payoneer, more often than not, scrutinise the transfer to make sure it doesn't violate their terms and conditions in any way before they approve the transfer, which might take a maximum of 2 business days. Once the funds are approved and the receiver's account gets credited, the transaction cannot be reversed, ever.
Just to be on the safe side, anyone that will trade with me via Localbitcoins escrow, should only release BTC when Payoneer has approved the transfer and his account has been credited.