I doubt it would work.
If you are talking about plumbing your keg straight into one, by the time the carbed up beer goes through all the various twists, turns and valves, you'll end up with nothing but a frothy mess and / or flat beer coming out. Also like the previous caller said, you'll basically only be poring a litre at a time while it chills.
I guess you could allways run chardonnay through it if tipped it into the keg first, or gravity fed it into the cooler. mmm - classy..