Does anybody know if there is a tig torch with the pot built in, like an adjustable trigger? Operates like the foot pedal, but with a finger used to operate it? Or if there is a reason or two why it couldn't be done? Sure does seem like it could make things a lot easier, especially when welding out of position, or any time not welding on a bench, etc.... I know there torches with an adjusting knob or slider type adjustment already out there, but a "finger pedal" would be pretty good, if it was do-able