I don't use that product, but I myself use a similar waterless wash product.
I use Detailers Choice Waterless Wash that I mix myself to keep the truck clean.
DP Waterless Auto Wash Concentrate & Detail Bottle, DP Waterless Wash Spray Bottle Combo
On my truck, I clay bar it twice a year, then polish > sealant > wax. And use the waterless wash to maintain. And touchup with detailers spray.
I plan on using something similar I think on the Airstream. But I dunno if it will be practical full timing.
Being a Corvette owner I'm someone particular about how I detail my vehicles.
I've had really great results with this method though.