I went with the detachable on my RG. Truth is I seldom ever take it off. Once you get use to have the storage you use it.
Once in a while I will pull it off and put my other seat on just for a change, it only takes a few minutes to remove tour pack and chnage seat. I alos like the way it looks ith out tour pack, but not out to look good .
The detachable tour pack and a different seat is one way to keep the bike intresting making a new on seem a bit less like a good Idea. You can chnage it up so it almost seems like a new bike.