1) I use a keyboard-centric tiling window manager and am trying to avoid mouse use as much as possible. Maybe I’ll get a trackball.

2) It seems to be. I find it quite comfortable at least. I’ll keep an eye on it, thanks!

what split keyboard are you using? Do you recommend it? Currently in the market for one.

Not him, but... Microsoft nailed it with the Sculpt ergonomic keyboard imho. Detached numpad so you can put the mouse closer to the keyboard, gentle sloping, nice key travel. It's a good split starter keyboard. This one is cheaper than the combo version because it doesn't include the mouse. Don't get the grey bluetooth one. It has a numpad and weird feel along with bt issues. https://www.amazon.com/Microsoft-Ergonomic-Keyboard-Business...

It's a kinesis freestyle 2. It doesn't have slick trendy features aside from being split, and I am not madly in love with it. Instead I would say as it's mostly invisible to me, which is exactly what I want out of a keyboard. So, I would recommend it.

I also have a Microsoft 4000 at home for light/occasional usage and it's struck the point of being good enough for that purpose, and it was quite inexpensive.

(If your wrists are straight on a regular keyboard and your shoulders are not scrunched you probably don't need a split board)