I bought some cheap fabric from Joann to practice with and I think I love it.
As I mentioned earlier, DS has special needs and some physical disability so we've only been able to use the RS. He finally hit 20lbs and it's just getting way too heavy to do much more than 10-15 minutes in the hip carry (he doesn't hold himself up at all)
So we practiced a front carry, and a back cross carry. Love!
DH was excited to be the guinea pig, it's so awesome having such a supportive partner.