Have any of you ever heard of or used the Lea's Shield contraceptive? I'm not currently in the market for new BC, (don't need anything right now. :-) ), but I found this recently, and really like the idea of it. It's kind of like a one-size-fits-all diaphragm. It seems like a really neat product, but it seems hard to get in most places. Any experience with it? Curiosity has gotten the better of me.