I'm loving my Manduca and have been using it loads as a front carrier but as the little man is getting rather heavy I thought it was time to try the back carrying option. It's much more comfortable for my back, I can actually use my arms again and the little man seems to like it too as he gets to see the world from a different angle; it must be comfortable for him too as he fell asleep when we went for our afternoon walk.
PS: Did you notice the little yellow hat the little man is modelling? This is one of many things I knitted for him before he was born. His great aunt was nice enough to give me a bag full of knitting needles and vintage baby patterns from her grandmother i.e. the little man's great great grandmother and this hat was made from one of those patterns.