Hmmm...I have the Air2s, Air3s, and Mini5 Pro. Putting on and taking off the cover is cumbersome at best and damaging at worst on all of them. I am always leery putting on and taking off the cover. The Mini 4 Pro must be different.
I only use mine when taking long trips either by car or by plane. For just short rides close to home, I don't use the cover; I just brace the gimbal against a pillow to keep it from vibrating. What about you?