ML Campbell states "Spray application only" in all documentation for Ultrastar water base lacquer.
Over the weekend, I was making up some test panels for an upcoming trim-out. Lazy got the best of me, and I didn't feel like dragging out the spray gear (not even the Critter...) for a few 12x12 panels and a few solid strips. The test panels were red oak stained with Minwax Natural, then sealed with Seal Coat with varying concentrations of Trans Tint Honey Amber dye. The test was mainly to test the dye concentration from zero to 8 drops/oz.
MLC US doesn't like to be applied heavily, so I knew varnish-style brushing probably wouldn't work out. I was about to try wiping it on when I spotted my foam brush bulk packs!
Two light coats of "Dull" applied with a $0.25 foam brush, with a light
320 scuffing in between, worked out FANTASTIC! You'd never know these panels weren't sprayed, and the dry / ready to scuff time was identical to spraying.