I've done this before but chaining the gate off of the guitar DI onto the reamped track, with the threshold just barely low enough to catch the notes in the DI and the hold and release set appropriately... Works better I think because there's a lot of times where there might not be a kick hit during a chug if there was a snare instead, plus this way you can apply it to the whole guitar track at once and BAM instant tight, done. Works because the noise floor on a DI is so much lower than on the reamped track.