DFS salemen and the likes will tell you absoltutely anything to get a sale.
go in and ask about protector on leather, then ask if it will stop dye transfer, they will say yes. then go back 6 months later after purchase and complain about dye transfer, only to be told that it doesn't cover dye transfer, your word against theres, "i never said that" would be there defence.
thats from one of my customers, i told her to send a friend in with a tape recorder and ask the same question. never found out wether she did or not.