I use it on the family's daily drivers. While I prefer the look of a carnauba wax (which I use on the fun cars), for the longevity and protection the Paint Sealant does what I want. The daily cars get used in all kinds of weather. I've found it works great and has an extremely shiny, reflective look, though a bit on the plastic looking side that sealants are known for.
Between washings I use Griot's Spray On Wax over the sealant.
On my car and my wife's car (which are garaged), it lasts a full year with no problem. My daughter's car, which sits outside year around, I do it twice a year...Spring and Fall.
It hazes pretty quickly, though outside temperature and humidity can affect that. It's easy to wipe off. Cure time for any sealant is 12-24 hours.