I would definitely advise creating a cheat sheet. But probably not want for the reasons you are thinking. Custom/mechanical keyboards are a rabbit hole and you

I would definitely advise creating a cheat sheet. But probably not want for the reasons you are thinking. Custom/mechanical keyboards are a rabbit hole and you might end up with a few of them, each configured slightly differently. You might want to know how to come back to them (especially if they have blank keycaps or extensive layers).