There are disadvantages in both directions. If you don't pay F&F people get the goods and then dispute the charge. Which is the reason most, if not all, people have gone to F&F for payment. The potential for scamming sadly goes both directions.
I think more directly, we currently have 2 disputes with the same user. Neither user has given feedback about the issue on the users profile. The user does have 2 neutral feedbacks from where there was an issue that resulted in a refund. Tren lost $175 and just shrugged his shoulder at the situation until a month later almost. Providing a negative feedback, even if you just decided to ignore the loss would have been justified. But yet, no negative feedback, no neutral feedback. Just no feedback at all.