Same here. I've even gone as far as to use it directly on bare plastic with little to no issues.
Don't think that the DupilColor paint available in Canada is much different formula than what is sold in the USA, but I could be wrong. I know that water based paint is now industry standard in body shops, as imposed by government regulations.
Sure, its a little more expensive per can, but some of the best rattle can paint jobs I've done have been using the Duplicolor line.
This one was done with DupliColor Honda Nighthawk black over DupliColor dark grey etching primer:
Lastly, I remember reading somewhere that a lot of the issues happening with Duplicolor were on newer Revell/Monogram kits. Somethign to do with the styrene chemical composition. Maybe that is the key factor, or I'm just making this up.
I had an issue on a few kits last year, but I wrote it off as using cheap, discount, no-name primer in lieu of Duplicolor to save a few bucks. Don't recall having an issue after switching back to DupliColor etching primer.
Needless to say - TEST FIRST!