The big velcro strap on the SW Motech Blaze bags is soft on the bottom. I haven't had any scratch issues. Actually, I end up just putting it under the seat to keep the bags from being heisted.
Great to know, was wondering if I would need to protect the area below the seat.
Shame the seat cowel has to unscrew, be nice if it was a clip off jobbie.
Thanks for the tip on security.. I actually did do a search to see if there was an easy method to secure the bags, as a quick fuel stop and they could be easily lifted!