I use Testor's Dullcoat over Future on every model I build. I apply the Dullcoat in VERY light coats, & I've never had a problem with it. The only time I ever experienced anything adverse was when I applied Dullcoat over acrylic paint (Gunze) that had been thinned with isopropyl alcohol. The key to applying Dullcoat is using multiple thin coats, waiting about 10-15 minutes between coats. I use very low pressure & paint volume through a Badger 150 (double-action) brush.
Hope this helps !