I wanted to use my cajon as both seat and bass drum while I play the acoustic guitar.
The pedal is great and comes with a handy tool to adjust anything on it, and can be set up for playing with either the right or left foot.
The sound is really nice and easily controllable by rotating the rubber head, which can be set to hit the cajon flat against the surface or with the edge.
However I had to change the setup of the pedal a bit before feeling comfortable with it, the main issue for me was that the head had to travelled to much for my taste before hitting the cajon.
And while the solid angled shaft is convenient, it does limit the position of the pedal compared to the cajon, because the shaft can only turn for a given range of angles ... With my long legs I couldn't find a very comfortable position by sitting aligned with the cajon, I have to turn myself a bit which isn't a big deal since I'm not playing the cajon with my hands anyway.
To sum up:
I'm more than pleased with the pedal now that I found how to use it comfortably, and only wish that the initial setup wasn't the way it was because it forced my to hit the pedal harder than necessary on my first trials.