i love that guys site, but, yah i know.... i want to do the leaf thing too.  it looks a lot simpler,  but i know how that goes too.  what axels did heather use and what is the link to her 'how to'? 
I use a hybrid setup, taking two axles, a sammy front and a sidekick rear. I used the sidekick rear middle section, so that I could put a bigger kick rear diff into it, and used the sammy ends with the birfs. I also got Brent at TT's "double tough" subaru birf setup, and I am running OTT custom chromoly axle shafts.
The main reason I went with a hybrid was to stay mostly suzuki, as well as the axles being readily available to me.
A cheaper way would have just been to go with a sammy front end, and lengthen one side. You could put the smaller sammy diff in it, and you'd only have to buy one custom axle shaft for the side you lengthened.
I guess I went with the way I did because it was beefier, and I would only have to keep on hand one 3rd member that could be used in either end. I know mine is a little more custom, but it seems to work.
We went with leaf springs because they were cheap and easy, we didn't need to fabricate a link set up, and they are easy to adjust to ride comfort and flex (ie add a leaf or take one away).
You can always find everything about my truck by just going to the link in my profile. However, here's a straight link to the SAS setup stuff:
http://www.whitepineclub.com/members/kd7hcg/pictures/SAS/index.htmlHope this helps.
Heather