This could also just be considered prudent... just think of what will happen if the 7th Cir overturns the Illinois unlawful use of a weapon law - 720 ILCS 5/24-1.6. People who have been convicted of AUUW for having a pistol improperly stored in their vehicle and similar cases will be filing with the courts to have their convictions overturned.
Why pile up even more cases to process if you think the law is going to be overturned?
http://www.ilga.gov/legislation/ilcs...2000050K24-1.6