The only draw back to these is warmer weather months. Your beer will not stay as fresh since it isn't refrigerated. Of course, if you're clearing a keg every couple of weeks or less, shouldn't be a problem (except for your liver and your sobriety).
"Beer, well respected and rightly consumed, can be a gift of God. It is one of his mysteries, which it was his delight to conceal and the glory of kings to search out."
The Search for God and Guinness by Stephen Mansfield