There are numerous types of cereals that are sugar and gluten free. Cereals such as Holy Crap and Kashi cereals fall under this category. All you need to do is to visit a local grocery and cereal store and request for the same, but make sure that you confirm from the ingredients if the cereal you will be given falls under this category. If you want to prepare yours at home, you can use the recipe at http://glutenfreegoddess.blogspot.com/2006/09/sugar-blues.html.
yes, readily. but most people are so sweets orientated that they wouldn't eat it and the companies would go broke.sugar only adds sweetness and nothing more. you can make your own by buying your grains in bulk goods stores taking care to watch for gluten and then sweeten with agave syrup if you want to because there is minimal glycemic rise or you can use xilitol for the same reason.