My Crown Vic is coated with CQUK, sits outside, and is driven year round; sun and snow. Back in my early detailing days I wanted to make the paint as swirl and scratch free as possible, so I picked up a PC and went to town on it. It came out great; almost showcar, but since it is my daily driver eventually it got swirled and scratched again. It got to a point where I would literally loose sleep over it because I wanted the paint to be as perfect as possible, but no matter how careful I was, swirls and scratches happen.
I finally realized that it is pretty much impossible to have a show car finish on a daily driver, so every year I hit it with Reflect to take out light to medium defects and bring the shine up. Could I compound and polish? Yes I could. But the car sits outside 24/7 and whenever you compound or polish you remove small amounts of paint, and my theory is that on a DD you need www much clearcoat as possible.
Like I said, every year I polish with CarPro Reflect, and coat with CQUK. Is it perfect? No. Is its pretty good? Yes, and I'm satisfied with it.
Anyway for a daily driver I would say coat it and the rest is maintence.
Cheers
Phil