I have the Saddleman tunnel bag, and it worked fine allowing me to carry a decent amount of gear, but not so bulky that made it difficult getting on/off the bike. If it is packed full, access to the sidebar locks can be a challenge, but it does not seem to affect the handling as much as other bags I have tried. I admit to rarely using mine since installing a fuel cell in place of the rear seat, and use a Motofizz medium for camping, which has much more storage capacity, but the Saddleman is a well constructed bag at a decent price, and it works on the FJR.