I'm planning on putting a dBrand skin on my 12.9" iPad Pro as soon as it arrives. I have one of their skins on my Nintendo Switch and I REALLY love it. It looks really cool and also makes it so that I don't have to be so careful sliding it into the dock. For the iPad Pro + Magic Keyboard combination, it will give me the same piece of mind when using it unattached, since I'm assuming I'll be doing a fair amount of that now.
So that problem is already solved, but I have been concerned about the keyboard itself. I know from my previous 11" Smart Keyboard Folio that you only need to touch the exterior a few times before it starts looking gross. I have not yet found any skins that cover the Magic Keyboard, so I decided to order the same skin I had on my 11" SKF--it's from iStyles and I loved it before:
https://www.istyles.com/shop/iPad-Pro-12.9inch-Smart-Keyboard-Folio/Skin?q=smart+keyboard+folio
I'm taking a bit of a gamble here. I'm thinking that the actual outer sections of the the Magic Keyboard are the same size as the old Smart Keyboard Folios. I will need to make a modification for the camera assembly, I'm thinking I'll very carefully trace the expanded cut out from an iPhone 11 Pro case to enlarge it and hopefully that will make it fit better around that square. My other option is I could just slice that whole top part off.
Either way, it's going to take some exacto knife magic and I'm going to have to be precise or it's going to look like crap.