After you have it like you want, I recommend spraying the foam with plasticoat (or whatever the rubber spray is called). The foam is still pliable but it will all be one piece and won't tear. Spray it _outside_. I used several coats.
I think I might buy one of these if I think I can put the Air and the Pro both in it. These will be my go to drones and being able to have them together in one case might be worth $25.
I'll definitely look into that. They also have a slightly larger one for $39.99 ($32 after the 20% coupon). I bought a Pelican last year for my Pro, wish I had seen these first could have been a substantial savings..