[RistrettoMike]

I recently pared back my own layout to something similar, and it's been surprisingly comfortable. I had learned to type on a split board for the first time a few months ago, and going from a more "full" split layout to something where you've essentially shoved all non-alpha inputs down into other layers was actually surprisingly intuitive.

I'm still memorizing some inputs; ones that require holding a layer key, then holding a homerow mod on one hand, and finally hitting the intended character key are proving especially tricky.

(eg: hold thumb key to switch to symbol layer, hold down homerow mod for shift, press desired symbol for shifted version -- poor example, but all the same.)

More folks should give this sort of thing a try! Provided you're not also re-learning the alpha-key locations at the same time, it's really not so bad a transition. A day or two architecting your layout, a few days tweaking with use, some dedicated practice, and normal use from there on out should get one comfortable. :)

[AndrewOMartin]

Not sure if relevant XKCD: https://xkcd.com/1806/