We've been using Wall Clips since October 2008, had (at one time) remotes sitting in them undisturbed for 3 months straight, and never had a remote fall out. It's still a good idea to pay attention when you push your controller back into the clip. If the grip feels weak, remove it, give the bumpers a little squeeze, and put the remote back in. You're done.

One thing to note: When removing the controller from the clip, do not twist to remove it. Twisting will tend to bend the legs out of position. Just pull straight out as demonstrated in the using guide. If you have to twist to remove your controller, the grip is set too tight. Stretch the bumpers apart so you can just pull it straight out