Wool diaper covers...a new obsession?

One area of cloth diapers that has largely remained a mystery has been the wool cover phenomenon. I had scored two handmade wool longies (covers with legs, basically wool pants) in a freecycle bag of diper stuff, and only just tried them out today. Ive been generally totally perplexed about the whole wool diaper deal. But MsZo has a bit of diaper rash which is not normal for her, so i wanted a real breathable cover...now im thinking ooh, wool rocks. Yesterday I was all about the bum genius one size, but I cant afford to majorly increase our stash of those all at once (but will bit by bit :). Neither can I afford to buy wool covers (pricey but I bet a great deal over the longer term, and cute! check out these overalls!) BUT it is possible to make your own home made wool covers ("soakers") from old wool sweaters (happen to have two fancy soft wool sweaters that shrunk) or by knitting them. Well I cant sew and I cant knit, but I am going to try the sewing deal after defending my dissertation proposal. If I ruin the sweaters, well, im not wearing them anyway. You may think wool this time of year is crazy, but its actually breathable and nice (without the legs) but warm in the winter. And i was freaked out by the ability to not wash them hardly at all - sounds gross - but their antibacterial and water resistant nature is amazing. Here is a good list of things to love about wool from another mom that I found while searching for patterns:

1. They are breathable.
2. They don't leave red marks on baby.
3. They are biodegradable.
4. They absorb a lot of liquid.
5. If they contain lanolin they are somewhat water resistant.
6. They have antibacterial properties
7. They are full coverage and resistant to leaks
8. They are non binding and allow for very free movement.

sounds good? got to add: possible to make your own out of old sweaters. but, like i said, i cant sew. so this may be a disaster. going to have to ask for help from my friend with a machine and skill...you know who you are. (oh, and i added sewing machine to my wish list :)