It takes as long to put in my brake buddy as it does to hook up the car/jeep. And once the brake buddy is installed it takes an equal amount of time to remove it for a quick disconnect and Sonic run. It is for these reasons that I normally do not use the AUX braking.
Note: I am fully aware of the risks and the increased braking distances. It is not the increased braking distance that worries me but not having a breakaway does. There are so many cables and I can see the TOAD in my camera that it hasn't been an issue to me. When I tow in my state with the mountains, I use it as it does NOT help much when moving but if I needed to stop going down one of those passes I will need all the help I can get. Through Texas.....eh, not so much.
Bill