I prefer to use full set on Avalon as stats can buff all army and more command will buff 4 skills instead of just one (plunder bonus is not very useful late game). Thats afcourse on f2p acc with clean&siege orientation rather than pvp and these 7 % may have impact. I find it annoying to switch Avalon and Grimms banners... may be those skills can be made upgradeable with points.
"They don’t sit on benches while eating but squat like Europeans do when they relieve themselves out in the leafy woods." Albert Einstein