I have full body XPEL and satisfied with the quality of installation, and protection from scratches. Went through many hand washes, no apparent scratches at all. However I think the XPEL surface lacks some of the gloss compared with normal paint with glass coating. When wet, it's great, but when dry it looks like a little bit dull and not sharp, not dramatic enough. What do you think? Do I need to do some coating over XPEL? My installer didn't recommend any kind of coatings over XPEL.