Sadly due to my work commitments, I've not been staying as up to date on this case as I'd have liked to. I missed the window to hear oral arguments in this case, but have it flagged to keep an eye out for an opinion in Westlaw.
Having said that, one of my colleagues was successful in having a case dismissed where the defendant was charged with possession of a firearm by a person prohibited based upon a 1997 felony conviction for criminal mischief (non-violent felony). In that case, as in other cases where I have raised constitutionality of gun laws as an issue, the persecutor simply dismissed the case rather than argue the issues so that we can get a judicial ruling. It's a tactic that the State seems to be using so that they can continue to enforce unconstitutional laws.