I'm enjoying it so far, I've had to adjust a few cases where I was using the wrong finger for a key and had to fix that when switching to this keyboard. My typing speed has improved but that may just be the lighter switches. As for any ergonomic benefit, this smaller board is more comfortable to type on and I feel like the ortholinear layout makes it better as well but that second one could be placebo. Also I just enjoy typing on this keyboard more which certainly helps.

Well originally I intended to bind the left spacebar to space and the right spacebar to escape for when I'm using Helix editor (similar keybindings to Vim) to make escape faster to press. But I've found having the escape key in the first column second row beside my pinky to be very comfortable, so right now I have both of the keys set to space. But I am still editing what keys are where so this may well change.
I'm glad you like the keycaps by the way, I'm very happy with how they turned out.

@Reverendender @mechanicalkeyboards Funnily enough, I haven't got round to soldering in the mill-max sockets I'm using yet. I put them in the PCB and they're a tight enough fit that all the keys work purely through the contact the socket makes with the PCB. When I get it soldered I'll send a photo though.

@urquell Thank you!