Simon, like Steve J says, I think it would depend on what you are prepared to do to them - they do need time spending on them to bring them up to resin/white metal standard, so I wouldn't recommend them if you just wanted to stick them together, then paint . For conversion purposes, though, they are ideal as a donor figure (and cheap!)
Richie - thanks for the compliment! I've still not got round to throwing paint on this one, yet!
Steve