No, I haven't done it, but I have recorded an audio spike from a trigger before.
I've used it both as a "click" on the kick drum, and I've used it as extra white noise for the snare.
A pieze element (which is a speaker) will be microphonic once it is "actived" (i.e., the head it's touching is struck) but the frequency range is NASTY midrange.
So like I said, it will allow you to record an audio spike, and since Drumagogue simply replaces the original sound with a sample - you should be able to do this and eliminate the need of an actual kick drum mic.
A Cheap mic on the other hand, will just do what a regular mic does.
I was just thinking that for the price of a pair of Kick mic's, you could probably buy the full Drumagogue and a pair of ddrum triggers.
Tim