I've got one and use it fairly often. The trick is to get a CO2 aspirator and hook that up to the gas post on your corney. That way you don't have to drink everything in a day. That being said the ideal would be a stout tap on nitro, but those are very expensive out here, and very hard to source the gas mix if you're not a professional.
Another consideration is where to put it - these are typically mounted onto a ledge of some sort and need enough room around them to pull all the way through.