The issue of firearms already comes up during divorces, but in a slightly different manner.
When my Brother went through a divorce a year ago his attorney recommended he remove all his guns from his home so his wife could not use it as an issue during child custody hearings. So, suddenly my gun collection doubles as he brings all his guns to my house. They eventually settled out of court after the PI discovered her boyfriend, but at least the attorney felt it might be an issue.
Divorces are nasty and people tell all kinds of lies to gain an advantage either financially or in the area of child custody. So, yes I have no doubt someone would use this proposed law to discredit a spouse.
A major source of objection to a free economy is precisely that it ... gives people what they want instead of what a particular group thinks they ought to want. Underlying most arguments against the free market is a lack of belief in freedom itself.
- Milton Friedman