no, but I did look at them heavily when I was shopping. they appear to be good construction-easy instal and easy removal in the event you remove it. Also I bet they hold their value if sold used. I decided on the retrax. The canister in the bed has not bothered me yet. I wanted a t slot rail and the ability to still use the cover with a rack system on the bed of the truck so the backflip/roller styles didn't accommodate.
I really like Bakflips and roller covers. Dont hesitate. Because your stuff is getting wet as we speak...