We've been omnivores for quite a while. Those incisors, cuspids and bicuspids didn't happen for no reason. Check out the Lustig lecture in comments 3 or 4. (It was accidentally double posted.) The biochemistry is very compelling. Excess fructose is the best explanation for non-alcoholic fatty liver disease that I've seen.
You get out there like a monkey in a tree investing some serious work in every gram of food you eat there shouldn't be any problem at all.
http://www.rfadventures.com/images/Animals/Mammals/ringtail-lemur-skull-bg.jpg Check this dude’s canines! Not bad for a berry eating fruit sucking insect squarshing vegetablerian!