Thanks Hyper. I haven't filled the bags to capacity yet as I haven't been on a long ride since mounting them. I do keep a rainsuit, bungee cords, some tools, and other miscellaneous stuff in one. I use the other for carrying a small briefcase, mail, groceries, or whatever I happen to be hauling around. I've not noticed any difference in handling. I do have to watch my clearances a little closer when manuevering around as they do stick out farther than the E-21 cases.