You can see that the flares are just screwed on therefore they do move and scuff the clear/paint underneath a bit so should be considered rather permanent - though personally I like the idea that they are removable for cleaning or other reasons, just don't plan to take them off for a show or something like that.
You can also see the nice merging of the front flare with the front lip spoiler - they are just screwed together with a metal clip on the back.
The wheel fender lip is certainly thick enough to just screw the VX flares on, though they are pretty light. I can't remember (or find a good photo) if they use a sheet metal screw directly into the wheel arch or if there is clip of some sort on the inside (directly screwed I think).
I recall there is something like 5 screws attaching each flare (plus the ones in the front that connect the flare to the lip spoiler).
Chuck
Volumex spider flares
Scuffs once the flares are removed
and attachment (this is the rear flare but the same for the front - attaching directly to the lip
