Hi,
My eight month old has had a gtube since he was just a couple months old.
There are a few different styles of buttons, the "mini button" is what he had for a few months, it did not stick out far at all.
In March he had to have another surgery, a funduplication, and before surgery they chaged his button out, the one he has now has a much longer tube, it sticks out about six inches, which is annoying, because I have to be more carefull of it, it can get caught on things. The only reason why I'm keeping this tube is because the enzymes flow right through it with a little bit of water in a syringe, that did not work with the mini button, the opening is WAY to small and enzymes will clog it very easily.
Unfortunately, my son has CF and Cerebral Palsy, so he is unable to take food by mouth and the g-tube is neccessary for all feeding, thus we absolutely have to get the enzymes through it. This is most likely not as important for you and won't be a big issue.
Hope that helps