In reply to Shaun Marshall:
Not that i know of. I don't think there is much difference between the two knots in terms of strength reduction.
There is actually nothing wrong with a single bowline with a single stopper knot as long as you leave a decent tail on the rope. If tied nice and snug, the whole knot is kept a good few inches closer to the harness than a fig8 since the stopper knot is in the loop rather than on the live rope.
Hope that makes sense.
Also, check out the Edwards bowline in the articles section. I find it a bit OTT, but i know a couple of people who swear by it.
Another aside, even if you use a fig8 to tie in, the bowline is probably one of the most useful knots you can know, learn it whatever!