This is a fun and useful plugin for easily getting some basic percussion sounds while playing. I’ve been using my guitar and after some experimentation and fiddling with the parameters, it is working well enough to have some fun with.
At first I was struggling to get anything working or understanding how it was responding to the inputs. What I learned is that playing an open string or fretting and playing a note wasn’t working. I’m guessing that the shape of the wave in this case doesn’t work well with the filters, and letting the string ring at all introduces all the harmonics so you end up triggering multiple instruments.
It works (for me) much better to hit the strings more …percussively 
I’ve found a few different styles that work pretty so far and after tuning the parameters a little more. One style is that use the 6th string and play it more like a two-fingered bass style. I keep the string muted and plucking it down a little lets the kick play and striking it more forcefully gets the snare. The other way that works well is to mute all the strings with my left and play some rhythm patterns across all the strings with a pick. In this way all three drums get activated in rhythm, with the kick responding to the low strings, snare to mids, and hat to high string. By adding a little swing and emphasizing different sets of strings while strumming you can get some nice results. I put a looper behind this and then can have a drum beat going to jam on and add layers to.