Yep, you sure can whip evap. skim or regular milk. Just chill your bowl and beaters and make sure the evap. milk is cold.
However, it will deflate, if not used quickly or folded into a gelatin. One way to lengthen it's usable time and to add some flavor and body, is to add 1-2 tablespoons of instant vanilla pudding. Partially whip the milk and as soft peaks begin to form, lightly spinkle in the pudding mix while continuing to whip. Whip until the peaks become firm.
By the way, this technique can be used for regular whipped cream as well. It will stablize and hold whipped cream for several days. Also it's great to use when icing a cake with whipped cream.
Happiness is a good piece of chocolate and a good cup of coffee.