When shooting Triple Seven pellets VS Pyrodex RS, or APP, or Jim Shocky Gold Sticks. Clean up is about the same. Granted Pyrodex RS might take a couple patches more to get the rifle clean. The APP and JSG is an easy powder to clean as well. Cleans with water, no swabbing between shots, some report excellent accuracy.
I purchased two boxes of T-7 pellets. I tried them in a number of my rifles. I compared them to accuracy with Pyrodex RS pellets. The Pyrodex pellets did a much better job of accuracy. In fact part of the one T-7 box was bad and they were duds. Also when you have to swab between shots, T-7 leaves a hard crud ring in the breech of the rifle about where the sabot sits. You must scrub that out between shots. It can lead to you short start a projectile because it feels like you have the sabot on the powder. So keep that in mind when you swab the bore. Pyrdoex RS while more messy, swabs easy. Also it is a soft fouling. And it will come out easy. APP and JSG does not need to be swabbed. Although sometimes you will notice a white powder near the muzzle of the rifle and it makes loading the sabot at first hard. Just a short swab will take that out. It also returns loading to normal.
As for the final clean up.. if one powder takes me five minutes more.. then it is five minutes more. I shoot mostly black powder and everyone knows how messy that can be.