Yeah they are just clipped in there.
When i bought my car from the import garage i noticed the the drivers side trim
had a few scratched on it , so got them to change it over.
On the way back down the motorway the bugger nearly flew off but just
managed to stick my hand out and grab it.
The trouble is if you go and take it off another car you break the tabs that hold it
in - apparently there's no way to avoid this so they ordered new in the end from japan.