I first want to compliment the dev; as an instrument, thanks, I love it. It's simple, intuitive, fluid, organic and as deep as you want it to be.
Where it lacks for this price though, is Audiobus/IAA/AUE/AbletonLink support. These are a must-have in order for me to use it in my regular workflow. Some bonus features that would make it worth a little more would be the ability to use your own samples and/or have midi out. If all that was implemented, I could see this easily becoming my go-to percussion choice.