SevenCubed - 1:02 am on Feb 26, 2013 (gmt 0)
In a nutshell you can input whatever you want into your structured markup but no search engine is obliged to use the info. It's at their discretion. Just proceed with it by applying it as it's intended to be used and at some point it might get picked up by google.
From a few sites that I am running with schema markup embedded no search engine has used the info. They still resort to the meta description tags. Google included.
And, welcome to Webmaster World mixtapekid457!