I've bought lots of seeds over the years, and hate it when someone sends seeds that haven't been cleaned somewhat, unless I know ahead of time. I've made trades where I only received chaff. That is terrible. The two people I'm trading these seeds with have always sent spotless seeds, so I want to do the same in return. To me, you mark on the package what they are, and don't rely on the seed pod for identification. Maybe that is just me being weird though. Some seeds are so tiny that it's impossible to really clean them without special screens, and I've sent messy seeds to people before. But, I'd prefer not to in this trade, if I can help it!
