Thank you for the responses, as I am a permanent HKID holder, other than 14 days mandatory quarantine at home, there is no issue that end.
The problem I have is the wording of the Swiss government website which suggests that if having stayed in a high risk area for longer than the previous 24 hours then there is mandatory quarantine of 10 days for those in transit.
TIMATIC is good but my CX friends tell me that sometimes the little details can on occasion be found wanting, especially when there are sudden changes which are occuring often at the moment, or there is nuance in the wording.
As a case of where details can have an affect is the example of CX only accepting the term 'Nucleic Acid Test' when US clinics just stated 'Nucleic Test' and denied boarding to a lot of passengers at LAX.