I have tried some of these and the trim kept "popping" off but luckily it was always noticed before I totally lost it!
I have now used the method explained by JohnH here :
http://www.volvoforums.org.uk/showth...92#post1173092
and am pleased to report that it works a treat and is far better than the plastic clips available.
You don't need to bond the bolts in place, I haven't and it still works fine!