Jamstix is very good in creating unheared patterns. So i use jamstix to create patterns mostly. Not all the time and in every song, but Jamstix can create very human drumpatterns or parts of a drumpattern like the hihat-track.
But the sounds from jamstix are mostly not good enough for an actual production. You can use them for sketching the song or jamming. But after all you will use an external sound to finish a song.