Dual temp zone keezer

I am planning on building a keezer and was wondering if anybody has put a insulated "wall" in the freezer to create a warmer / cooler side for different style of beers. I ask because i noticed when i had a freezer in the past the side with the ( moter box ) stayed a bit warmer.

 

Never done it but I've looked at this one many times and considered it.

 

I know it's 4 years later, but here's what i'm doing http://www.homebrewtalk.com/showthread.php?p=7638609#post7638609 and the kickstarter project is here https://www.kickstarter.com/projects/1961714202/dual-zone-beer-fridge-controller. This can be applied to the keezer configuration you are talking about, though i've not actually tested it in that configuration. The heat swap fans would be installed in the insulated wall that you would fabricate. If the project is funded, i might actually buy a chest freezer and try the system out on it.