Know it's a bit late but just had a couple of points to add.
I totally understand why you are anxious, it seems so unnatural, yet when you get used to it, there are lots of benefits. DS has an uncordinated swallow and he had the peg very early, at about 8weeks, and then a mini button about a month later.
Although like many children he got a raging temperature after the op, he recovered quickly and it was the best thing ever.
We have (mostly) avoided a food aversion. Children with a tube through their nose or throat can find it more difficult to adapt to feeding later as it has bad memories. If the food goes straight into the stomach there is nothing negative for the mouth if that makes sense. It's also more discreet when out and about and when you can change the button yourself, hospital visits decrease.
We have a feeding pump which was a god send, all those hours holding a syringe in the air... I've been amazed at how many people know someone with a button too, "oh yes my friends daughter, god daughter, cousin etc. Had one of them" somehow that's reassuring too. Good luck :)