Can you find any references that show a 30 year history on the Stewart products. Even their website discusses a "revolutionary new system", which doesn't exactly tie in with a long service history.
Here's a starting point. Stewart purchased the product line from AFS (Aircraft Finishing Systems) a few years ago (<5, If I recall). The relevant questions seem to be: How long did AFS offer its products before being purchased by Stewart, and are the Stewart paints identical to the old AFS paints?
I'm not knocking the Stewart products. I'm simply pointing out that the system doesn't appear to have a proven track record. If you can find data to show otherwise, I'd love to see it.
Stewart systems passed the FAA criteria for application on certified planes with flying colors. Far easier than anything else out there. It is what I use to paint planes with. As far as the stripper goes, it is some fantastic stuff. sticks like glue and will not hurt the glass if you get it of in a reasonable amount of time.
This is how I redo a plane:
Remove all control surfaces.
Remove wings
If I am doing a restoration remove horizontal and vertical.
Spray each piece with the biodegradable stripper (it can sit over night).
I use a steam cleaner to power wash everything off. Inside and out. This is a very simple and easy way to do it. It is also possible to do it without removing anything but control surfaces.
Any thing left gets aircraft stripper or another coat of Eco strip.
Check all rivets, replace if bad.
etch
Stewart Systems primer
Stewart systems paint, This is done piece by piece because you cannot paint much at a time.
If you do not like SS screws showing you can paint them once everything is back together, Stewart Paint will lay right down on fresh paint with in 10 days.
Check the balance on controls and reinstall them on wings, horiz and vertical.
Plastics get Eco fill primer sealer then painted accent colors.
Any scratches can be retouched as well as screws or fasteners. Not really a problem as the paint is some of the toughest stuff I have worked with.
Paint your accent stripes and N numbers.
Better yet call me and I will cut your N numbers in colored vinyl as well as the stripes.
I re-weigh the plane at this point. Unless the customer does not want it weighed.
Dan