We have one on our Powertrack. It was absolutely perfect when the little one was a baby in the matrix carrycot type arrangement. Now that she is bigger and facing forward in the normal Powertrack seat it's slightly problematic. The hood/canopy part of the Powertrack is right in the way of my (3 yr old) son's face when he stands on the buggyboard. We've got around this by taking the canopy out of the slot where it is supposed to go and wedging it down the side somehow so that it sits a bit lower. It doesn't then fold out fully, but it does at least provide a little support to balance the raincover on (which we've needed a lot recently). Does that make sense?
So the short answer is yes but the pushchair canopy might get in the way of the buggyboarder's face.