Yeah Fatty I've had a go, I don't feel it helps much but my pelvis is misaligned so it would hurt regardless.
Clstow, carriers that bring babies knees up above their bum are the most comfortable, so not a bjorn. They're not dangerous (although, if your baby has undiagnosed hip dysplasia it can really aggravate it and cause it to get worse) but very uncomfortable for carrying babies above about 3ish months. I would suggest getting to a sling library to try some out as it's really individual. I prefer wrapping, so basically using a long piece of cloth to tie my baby to me but my husband prefers buckle carriers (Connecta is his favourite brand but there are lots more). More than happy to give advice on slings if anyone is interested :)
We're not buying pramsuits, I did have one for my son (November baby) but never ever used it as we used the sling 9/10 times and if he was in the pram he was perfectly warm with regular clothes and blankets :)