Difference between Testors 1260 and 1260T

Have used the laquer over acrylic without issue.  No experience with the dullcoat enamel, but you should be okay, just realize you have a lot longer cure/dry time, up to a couple weeks depending on temperature and humidity.

I have used the enamel dullcoat and glosscoat.  I see no advantage to me and the drying time is much longer than the lacquer versions.  I have not used a lot of acrylic enamel, so I don't need to worry about compatibility so am staying with the lacquer clear coats.