PWs are magic...they can do EVERYTHING!
Ok so seriously, yeah, you can trigger your camera using PWs. You just hook the motordrive cable to your PW and then to the remote plug in the side of the camera. Then you can press the PW test button and it will fire the camera off.
And the MMs can do EVEN MORE of EVERYTHING! They can communicate with any PW (as far as I know?) as long as it's on the right channel. The 2nd curtain sync works pretty well, but it isn't perfect. For some of the speeds you might have to tinker w/ the delay speeds a bit to get it all dialed, but it works. I've got a MM and two PW +2's...they play well together.