I've ran manual cutouts (the basic one with a cap) several times on other vehicles. Switched to a QTP electric once and got about 2 months out of it before it died. Said screw it, and never went that route again. DMH seems to be reliable from what I've heard.
'13 Deep Impact Blue GT, auto, BBK cat deletes, GT-500 A/B's, C&L tuned DiabloSport inTune, sound tube delete, BBK 85mm TB, JLT oil separator, NX plate kit.