I just got through using the "spray version" and applied it with a 1/4" nap roller. The stuff works great! Attention to prepping the cabinet is well worth the time spent for a nice light texture (any surface anomalies from a not perfect prep will show up).
A little of this stuff goes a LONG way. I still have 3 quarts left over after doing four 14"x14" cabinets. Call the manufacturer if you have any questions. They are extremely helpful.