I've got a pair on my Swift. They aren't the lightest wheels but they seem plenty tough enough and I managed to get them cheap in a sale. The rear freehub has been ok on mine so far. There is a little grease port in the hub body and I flushed it through with fresh grease a little while ago. Not sure if I did the right thing but its still spinning and has even quietened down a little bit.
I've used the rear wheel with both single speed spacers and now a Shimano 9 speed cassette and it doesn't look like the freehub body has been chewed up by the sprockets.