I've used it for years.
I apply AIO with a 7424 and foam pad wrapped in a microfiber bonnet. I remove it with a microfiber cloth. Application is relatively easy, and durability is excellent. Looks as good as most other products. One thing I love about it is that I can use it on every exterior surface of the car: paint, plastic, glass, rubber, chrome, that textured gray plastic shit that makes vehicles look so rugged and butch, etc. It does not leave a white stain the way some products do.
Do NOT apply heavily, or it will be a giant pain in the ass to remove.
Sometimes I top with SG, sometimes not. I've also topped with S100 paste wax and Meguiar's #16.
Remember that it is a chemical polish and sealant, not an abrasive polish. It won't do much for swirls and scratches.