"The fact that this LEGUME is entirely edible — including the pod — accounts for its French name, mange-tout, or "eat it all." Its almost translucent, bright green pod is thin and crisp. The tiny seeds inside are tender and sweet. Snow peas are available year-round with peak seasons in the spring and fall. Choose crisp, brightly colored pods with small seeds. Refrigerate in a plastic bag for up to 3 days. Both tips of a snow pea should be pinched off just before using. They're an essential vegetable in Chinese cooking and may also be used raw in salads. Snow peas are also called Chinese snow peas. See also PEA."
So go ahead and mange-tout! That's what they are made for - sweet!