I agree with the OP. I find the prep required for a coating and the maintenance required really makes the ROI questionable. Additionally the water spotting issues pose another challenge with some coatings. Something like FK1000P or IW845 provide awesome protection and minimal effort. Some contaminants come off easier with a coating others with a good sealant.
I'm hoping mother's CMX really bridges the gap.
I dunno, I guess I dont really get where the 'extra' maint. required w a coating comes from. Unless I'm messing around with something just for fun, maintaining a coated vehicle takes me far less time than when I used a sealant.
Sealant:
1. Wash using a bottle of your favorite shampoo
2. Dry
3. Apply Detail Spray/Spray Wax
Coating:
1. Wash using a bottle of your favorite shampoo
2. Dry
3. Apply SiO2 Topper monthly
As for the yearly Spring Refresh:
Sealant:
1. Wash
2. Clay
3. Apply sealant
Coating:
1. Decon (hose down with iron/tar remover)
2. Wash
3. Apply SiO2 Topper
With a sealant, if car got rained on, it needed washing. With coating, if car gets rained on, it *may* need washing but not always; sometimes if car is dusty I'll just leave it outside if heavy rain is forecast overnight and let Mother Nature give it a sufficient rinse.
With sealant, if wife brings car home with a large bird bomb on the hood at 10pm, address it immediately. With coating, I'll get to it tomorrow or hope for rain to rinse it off overnight.
While water spotting is often mentioned with coatings, I've never had an issue with it. In the sealant days, water spots on the hood I didn't get to quickly enough etched the paint (although that coulda been some rare freakish devil-rain incident that woulda damaged a coating as well)
And when you consider wheels & tires, coatings are a real timesaver. Used to take an hour alone to wash wheels, apply tire dressing (which would maybe last through a rainstorm or 2). With coated wheels and tires, spray down and dry.
Granted the initial prep and application can take somewhat longer with a coating but I'm only doing that every 2 years as opposed to every Spring when using a sealant.
Coatings certainly ain't perfect, they have some concessions one has to accept but overall, keeping a black car presentable is far less work for me than when I was using a sealant. Since going with a coating I feel that our cars have better protection and require far less physical effort from me to keep them looking good enough to me that I still turn around and look at em after parking them somewhere.
Everyone is different though, gotta do what works for you.