Colour me confused........
Not everyone vomits (and not all of it, as Pat mentioned) with overeating. I am unclear whether you are asking about the sleeved stomach or the RNY pouch in your question. With RNY, it is most concerning to stretch out the stoma, allowing food to more quickly pass through to the intestine and in larger quantities. With the VSG, it is entirely possible to stretch the stomach with over eating, as the sleeve will naturally stretch anyway (normal) over time.
Karen
Ontario Recipes Forum - http://www.obesityhelp.com/group/ontario_recipes/