So far I have found that the city of The Colony (north of dallas) considered this back in February of this year.
http://dfw.cbslocal.com/2013/02/20/the- ... arry-guns/" onclick="window.open(this.href);return false;
Here is how the current policy reads
Firearms and Lethal Weapons, Possession of.
Except for employees commissioned by the City of Farmers Branch as police/peace officers, City employees are prohibited from possessing firearms while on duty or in any City building or City vehicle, regardless of whether the employee possesses a Texas handgun license. However, employees with a valid handgun license may retain the licensed handgun in their personal vehicle parked on City property during their duty hours, or before reporting to or after departing from duty. (Terms used are as defined in Chapter 46 of the Texas Penal Code.)