I've been using the traditional Baby Bjorn sling, and it's been really pulling on my neck/back, and I was thinking it would be so much better if the weight could be transferred lower down, like a rucksack that clips around the waist. Then I saw the new BB active sling in a catalogue, and it's on Kiddicare. It looks perfect, but before I put in a request for Christmas, I just wondered if anyone had used it and what they thought - is it easier to carry? Is it easy to put on/take off?