Keycap interference on south-facing boards is only an issue with cherry profile caps, and an increasing amount of switches solve the issue with slightly changed housings or longer stems.
In other words, it might very well be a non-issue. And if your combo of caps and switches are problematic, you can always use tiny slips of paper in the stems of the switches, or o-rings.
Not holding my breath for the former, these things have a way of ending up being shit for customers.