Hi, first post here!

I have a Nikon DSLR that I want to take touring. I am not concerned about the camera's weight, since all my other gear is ultralight. I have a bag for it that I want to mount to my drop handlebars:

http://www.amazon.com/Lowepro-Toploa...DSLR+toploader

I do not need a super in-depth tutorial. If I loop velcro luggage straps through the two plastic rings on top, and secure the bag with a third strap through the belt loop, what is my reasonable expectation of rigidity? Will the vibration from riding loosen the velcro?

Anyone with experience custom mounting bags, please let me know your tips and tricks! Obviously, I can't have this bag falling off!

Thank you very much.
-Mdilthey