Never used one before but i've found using a Keycool84 difficult in the beginning because of the size, so i can't comprehend how difficult it may be with one of those tiny boards!
That being sad it's only really csgo that i originally had issues with and it's probably due to my use of the numpad for buying, binds and whatnot. Also coding, I don't think i could get on with a board that tiny but i guess it depends what language you're using!