This is a very comfortable and so easy to use Babycarrier. I have tried all positions with both my small children now (27Ibs and 21Ibs in weight) and I found the weightdistribution was brilliant, as they feel so weightless and at no time was I worried about their safety.
It does state in the Instructions that the Backcarry should only be attempted by someone experienced with that position, and preferable with assistence...however, I have found it really easy to get my Little Ones into the Backcarry.
The only "negativ" thing I can say about this carrier is that, when you use it in the Backcarry position it does look a bit funny, as the straps are crossed over in the front, and I had to arrange my breasts a bit to make it a comfortable fit, though it still makes them look funny....however, I don't consider this a major problem.
I like the idea of this carrier being good to my little ones spinal and hip developement, even though it doesn't look any different to more conventional used Babycarriers.