I used Reeps diet for several months before completing my own research and developing my own GliderKids feeding plan.
My gliders ate it quite well and had no problems while on this diet.
I would suggest feeding a very wide variety of fruits and vegetables with it to bring a full complement of vitamins and minerals to the feeding that the provide. Include some dark green leafy veggies each week and limit the corn and peas and other very high phosphorus vegetables to only a few times a week.