If you use the HD travel bags that fit the saddle bag, you'll find they are a little snug but make the saddlebags much cleaner. Some of the guys on here make ther own and they really come out nice!
Handy for sure, keeps things together. Don't care for the zippers they have on them though. Dual plastic zipper prone to failure. Had one rip out and took it back to dealer, they replaced it under warranty. Just have to be careful opening and closing. The single pull draws the two sides together kinking the large plastic teeth resulting in fail. A single zipper would be more durable but I think the design idea was for bag to be left in saddle. and allow for more open access when used. Now that I'm out of warranty the next failure will result in removal of zipper and test my Betsy Ross skills by sewing in velcro in place of zippers.