I have been using this setup 3 years now with no problems. The Icom has velcro on the back and velcro is on the yagi.
I have heard that the booster can strip the BNC connection on the Icom, but I haven't had that issue. The only time I take the icom off the yagi is when I chnage my rech. batteries out. I do not have to remove the booster to do so, so the booster stays on at all times. I can change the battery out of the booster as well without having to remove it from the Icom too.