i use the vortex core. i chose that keybord because of space restrictions on my desk and also it nicely matches the monome aesthetic.
same deal as other compact keyboards, you have “layers” of keys that you access by holding one key and pressing another. what’s great about the core and another reason why i chose it is that it has the layers printed on the keycaps themselves, and they are color coded with the two function keys, which you use to access them. so you don’t have to memorize where anything is.
i wouldn’t be able to use a compact keyboard, especially a 40% like the core for any regular typing duties, but for TT it works great. i take my time writing scripts, and it’s not like i need to break any speed typing records. but all the keys you need are there. it takes a little bit of getting used to, but it’s really no problem at all. feels great to type on and is roughly the same size as an arc4.