Combine water, sugar, lime peel and lime juice in small saucepan. Bring to a boil over high heat. Remove from heat; cool completely. Strain to remove lime peel from syrup. Discard peel; set syrup aside
Toss blueberries, strawberries, raspberries and grapes in large bowl. Add syrup; mix lightly. Cover. Refrigerate 1 to 2 hours, or until chilled, stirring occasionally.
Stir in bananas just before serving. Spoon evenly into 10 serving bowls; top each with a serving of Reddi-wip.