Just to clarify, I am a non-EU & have no visa-free access to Europe nor UK.
However, I have been granted a 6 month UK visit visa & I intend to travel to Edinburgh for a week before flying to France (for 2 days of travel) and finally back to Switzerland.
Now, I am currently residing in Switzerland and have a Swiss residence permit. I understand that with it, we can visit other schengen countries (subject to 90/180).
What I would like to confirm is that during the validity of the permit, it functions as a "Multiple-entry visa" of sorts ? (to put it loosely). So in essence, with this permit (well within its validity) + my passport, I can leave Switzerland for UK and come back with no issues ? (I have a UK visa too of course).
Issues as in like gate agents asking for proof of visa etc. I understand that entry to the country ultimately lies with the immigration officers