This is a good tip. I did find this out beforehand though. Probably some YouTube video. What I have also found though, is that when customising the top-right pull down quick actions, there is a button 'hidden', that can draw in both wing mirrors. You can drag it up to be one of your quick actions. It is very useful in a 'squeeze', but you have to be going below (probably) 6mph before it works, and when you know you're in approaching a 'squeeze' it's still not very quick to find and press. A bit annoying but better than nothing.