I had my first ever MSer citing. I went to the money center at my Nola walmart (there was almost no line) and the guy in front of me has a stack of MVGs laid out to buy money orders. Not sure how experienced he was since he asked what the price for MO's was, but he knew the workaround and told the CS rep that he paid employees with the cards. She first said that it wouldn't work because the system recognized the cards as credit, and when he knew the workaround, said "oh, you hit the change payment button" and smiled. She then asked where he got the cards and he said CVS. She then asked how, and he said he used his credit card to buy them. After he did 2k, he asked if he could try another.
Interesting. I've never bought more then one MO at a time (using two swipes) and have always loaded BB separately from MO's. Never tried anything so blatant. Figured it was a sure way to get asked not to come back.