Oh God, please no. I mean, if you genuinely have something to relevant to contribute or share, then by all means. But please don't take up our time just so you can practice. There are better ways (Toastmasters, for instance) and we are trying to get stuff done in somewhat limited time.
Agreed, check out Toastmasters. They have schedules built around working 9-5ers and you'll get better feedback than public officials could possibly offer.
No need to waste anyone's time on the public dime so you can practice talking to people.