I’m in the UK so I would like to have a keyboard that has the at-symbol and inverted-commas in the correct places for my fingers. The Keychron Qn Pros all come with keycaps that have the ats and inverted-commas the “wrong way round” for me so I was wondering if I buy a Q2 Pro and a set of keycaps, will I be able to put on the keycaps that I want and remap the two keys using Via so that they send the correct characters?
Followup question: if I am going down the custom keyboard rabbit hole should I just learn the ANSI layout and get used to the locations of the ", @, ~, \ etc characters?
Though ISO layout is relatively less adopted, some of the more popular keycap sets and custom PCBs do have ISO variants or add-ons. So you should be good until you look at exotic/tiny/niche offerings.
As an activity, you could take a look at the past group buys and offerings, and note down how many times did a designer not support ISO layout in an offering you liked.