Here’s just a few of the tools available in the Step Sequencer :
Add Flam to any step by simply double clicking it (then use the flam time knob to adjust timing).
Easily load/save patterns from the Options button or drag and drop patterns from the Media Browser.
Auto-populate feature provides shortcuts to fill a lanes every 2, 3, 4, 5, or 6 steps.
Controller Pane for per row articulations and controls, including Volume, Pan, Pitch Bend, Mod Wheel, Portamento
Per step parameter controls for Velocity, Time Offset, Probability, Lane-based MIDI articulations, Filter Cut and Filter Res.
Parameter values are displayed as bars underneath steps in the controller pane, making editing per step parameters such as Velocity, Step Offset, Probability, and other MIDI articulations quick and easy.
Exclusive Per Step Probability provides control over the probability of how often a step will be triggered. Use it to create automatic variations (make some steps only play occasionally) to keep repetitive patterns sounding fresh.
All this is combined with the functionality from Step Sequencer 1.0 including: Step Recording, the Velocity Multiplier, Fit to Quarters capabilities, and more.
from the CW blog. as i use it mainly for extreme metal, i guess i don't need the kinda swing you get in jazz/fusion, but it seems you could do quite a bit of that.