This is awesome piece of hardware. Really stunning display. But this device has its quirks and issues. Lets go through these step by step. First of all... This is not just a bigger iPad Air. This is totally new device with expanded functionalities. Again: expanded.
I use it for all things I used my iPad Air 2 plus a few other uses. My main motivation was in-situ photo editing. Why? I often take photos during various Aikido events and I am asked to provide results in real time. I wish I had like 3 days, to go home, transfer the pics to my Vaio Pro and play with them with Adobe Lightroom for several hours while sipping single malt and listening to Yusef Lateef. No, I am expected to provide results within the timeframe of the event. So I am dumping the photos from my Nikon to iPad Pro (via use of this and this device), there I have Lightroom and Photoshop Fix for photo manipulations. Then I can post directly on FB, other social media or just email the pics. Easy, right? No.
First issue - uSD to CF converter allows for any size of uSD, but my Nikon D700 does not recognize SDXC, so I can not use my 64GB card, only the 32 GB one. This is still more than my 16GB CF, allowing for 1.3K photos. Speedwise I see no change. OK, 1.3K photos is still an improvement. Bigger issue is in software - once card is connected to iPad - it automatically launches Photos and imports all pics (shot in Nikon *.NEF format). But neither Lightroom not Photoshop Fix see these pics in gallery. So I have to go through another program - Procreate to import NEF as a new layer, flatten image, then export as JPG back to gallery. This workaround is unnecessary annoyance. Blame Adobe. Bottom line - with some idiosyncraties I achieved my goal - I can use iPad Pro's amazing display for image processing. Second major usecase... Apple Pencil allows for interesting interactions. I started taking work notes, private notes on iPad, I started (finally) designing my tattoo, I drew the house I lived in till I was 3, I built and expanded mind map of my over 20 years worth of Aikido notes...
And I doodle a lot.
Preferred app - Concepts. My only other complaint is that I have such a huge screen real estate and I still get to keep only 6 icons in launchbar (its not jailbrokem).