Cool-It USB Beverage Chiller

If you must work this Holiday Weekend, (it's Memorial Day in the U.S. on Monday) may we recommend the Cool It USB Beverage Chiller from Perpetual Kid?

This seems like a much more practical USB item, especially for summer...but we wonder, what about sweating? Condensation produced by chilling is water, and water and electronics definitely don't mix--anyone had any experience with one of these? It retails for $23.99.