There is grooving now. I have adopted Ableton Live’s groove system. If you place a groove clip on the track with the DrumSeq and let it play or loop, the sequencer will play in time with the groove. If no groove is played the drumpseq will play again in straight mode. This means that all of Live’s groove library is at your disposal and that you can play your own groove clips as well. In stead of groove templates you can also use MIDI clips with 16 well placed notes (pitch doesn’t matter).
By playing grooves with 8 or 32 notes on a bar the DrumSeq can play in double and half speed. Five, Seven or eleven notes let the sequencer play odd signatures, but this needs some experimentation.