Is it possible to buy "sample keyboard"? Kind of couple of keys to hear and feel? I know it's possible to buy switches themselves with all the colours, however I'd like to try how they work with keys before I buy the full keyboard.
Some switch testers will come with caps. Otherwise you can just get blank caps rather cheaply and put them on.
If you want a slightly more in-depth experience, there are hotswap macro pads that will let you change out switches, with keycaps, and actually input things with them.
The only other option is to track down a keyboard meetup, at least that will be an option against post covid.