He does some analysis of different keyboard layouts on his site. I thought he had heat maps and evaluations for workload on various fingers as it relates to digrams, trigrams, and finger rolls, but I couldn't find those, so I might be thinking of another website.
I tried Dvorak for 2 weeks and didn't care for it because I depend heavily on hot keys. I've been using Colemak for almost 2 years and I like it. I do have a problem with my fingers "tripping" over themselves sometimes. My hope is that the ortholinear arrangement of the TextBlade corrects this problem. Choice of layout can make a huge difference in typing efficiency and comfort but it's not a panacea. Interaction with a keyboard is kind of like differential calculus; changing one component can change how you interact with other components. For some typists, switching from a row-staggered key arrangement to a column-staggered key arrangement might provide just as much or more benefit than switching from QWERTY to Colemak. Tenting (for split keyboards) and tilting the keyboard will also change your interaction with the keyboard. If you have the opportunity to use one, I recommend trying a column-staggered keyboard like the Ergodox or the Kinesis Advantage.
A lot of people like ortholinear keyboards like the Planck. I've never typed on the Planck but the arrangement looks like it requires a great degree of ulnar deviation to use. If you want to try an ortholinear keyboard, I'd recommend something more like the Let's Split because you can adjust the halves to suit your physiology. I still feel that, conceptually, column-staggered is superior to ortholinear, but everyone's fingers are different so ortholinear layouts may provide better results than column-staggered for many typists. Because the TextBlade minimizes finger travel to such a great degree, I'm hoping that it renders the issue of ortholinear vs column-staggered moot. In the meantime, if you get a programmable keyboard, you can try any layout you like and still keep the undo/cut/copy/paste keys in the same locations. You can also try Karabiner for macOS, or AutoHotKey for Windows, to create your own key maps and find out what you like before you invest in a new keyboard.