James,
I have a set of racing pedals with the accelerator pedal being similar in size and shape to the Autovation pedal. It definitely helps for heel and toeing but I have hit the gas pedal a few times (along with the brake) unintentionally. Didn't cause any problems but did scare me once for a split second the first time it happened before I realized what was up. The offset pedals exacerbate the issue. Now when I get in the car I consciously go thru the pedals with my feet to get the proper "muscle memory" before taking off and no more problems (unless I drive with my clogs....not advisable).