while I have never had it done, I know a person who does it and I also know a guy who has had it done to his Class A Newell..
If done the right way, it could take up to 40+ hours to prep and apply....
As far as cost, I have heard upwards of $8,000.00++ BUT... that is second hand info and I am sure that number would change depending on the area also...
All that said, it will have to be re applied in a certain time frame, so for me, it's a no
Me-Her-the kids
2020 Ford F350 SD 6.7
2020 Redwood 3991RD Garnet