I wish I woulda seen this sooner!! Im a huge line-x proponent. My dads 86 CJ7 jeep is entirely line-x'ed hemi orange and black. Everything, even the bolt heads. My grill and stuff on my 04 is line-x'ed white.
The weight isnt a big deal. We had my dads jeep entirely apart and it didnt feel too heavy to put back together. We didnt weigh the tub or anything, but it wasnt drastic. My grill, I could tell a touch as my hood struts were worn and marginal before. After they didnt work at all.
It doesnt do a "great" job at hiding dents, however. The texture creates shadows, so you can see dents that a paint job might hide. BUT, I think it does hide a LOT. We simply sandblasted the jeep and had it coated. No body work at all. At a distance the orange almost looks metallic.
When it comes time to paint the cummins/ramcharger, Im going to linex the rockers, hood, and removeable top. And inside probably. It seemed to help noise and heat rejection in the jeep a decent amount.
Edit: If it doesnt have "xtra", the top coating, it will chalk and look like crap quick. My grill is xtra and its ~3 yrs old and looks brand new. The jeep has been done for about 1. 5 years... and it still looks great even with the new mexico sun beating on it.