These are the Kailh XSwitch. I haven’t tried the new cherry ulp yet.

I haven’t personally tried, but I have heard a lot of people say that switching between isn’t too bad. It can take a minute or two for the memories to come back though.

I’ve also heard that using different keymap layouts (ie, QWERTY vs COLEMARK) on different physical layouts. QWERTY for typical rowstag, COLEMARK for ergo.

There are some low profile tripod stands. the manfrotto MP3-BK is nice, but pretty expensive. There are also a bunch of “Z Tripods” that get used a lot.

A 3d printed case for tenting is definitely an option, but it can take a while to find the right tenting angle so be prepared to possible print multiple variations.