We're waiting too. I read a thread the other day that was saying you should be worried about choking so that you are aware of it iyswim.
Wiki says
"Baby-led weaning places the emphasis on exploring taste, texture, colour and smell as the baby sets their own pace for the meal, choosing which foods to concentrate on. Instead of the traditional method of spooning puréed food into the baby's mouth, the baby is presented with a plate of varied finger food from which she may choose.
Contrary to popular belief there is no research supporting the introduction of solids by purees and in fact babies can become very confused when stage 2 foods are introduced (with lumps) unsure whether to swallow or chew.
According to one theory, the baby will choose foods with the nutrients she might be slightly lacking, guided by taste. The baby learns most effectively by watching and imitating others, and allowing her to eat the same food at the same time as the rest of the family contributes to a positive weaning experience. At six months babies learn to chew and grasp and this is therefore the ideal time to begin introducing finger food."
"It is very important that baby-led weaning is not started before the child shows developmental signs indicating that she is ready to cope with solid foods. The baby should be able to sit well supported, be eager to participate in mealtime and maybe even trying to grab food and put it in her mouth. The child should show signs of developing a pincer grasp, as well as an ability and willingness to chew. The tongue thrust reflex protects a baby too young from consuming food. This is why often when purees are introduced, parents can be seen catching liquid forced back out before trying to re-introduce it."
"Babies weaned using the baby-led method are actually less likely to choke on their food, as they are not capable of moving food from the front of the mouth to the back until they have learnt to chew. In turn, they do not learn to chew until they have learnt to grasp objects and place them in their mouth. Therefore the baby's general development keeps pace with her ability to manage food.
If a child gets a piece of food too far back in their mouth, they will often promptly clear it themselves by gagging or coughing the piece out. According to Gill Rapley this seems to be fairly common and not dangerous - it's simply nature's way of preventing any risk of choking.
Food should not be placed in the baby's mouth for her. If the baby is unable to pick up and grasp the food, she will also be unable to cope with chewing and swallowing it. It is also very important that the baby is sitting up straight and well supported during mealtimes and never left unattended while self-feeding."
With my older dc I weaned them at 4 months on purees (had never heard of BLW) and they were both having finger foods by 6 months anyway. Nathan used to gag alot but quite easily brought it back up again himself, chewed it some more and then swallowed it again!!