Ron, according to web forums, I am the only one on the planet that has been through a chains/snow tire check on the planet. One was the Hope/princeton and I had a set of chains for my massive 31" bfgs in my cherokee. So they do check sometimes. (when i got my trxus tires, cops in valemont let me through a check when there was a couple feet of snow, but that was unusual and a bit off track)
I don't recall exactly, but you have 4 1/2" backspace don't you? That eliminates most of the clearance issues. The concerns are with the abs/bas and brake lines.
Most information sources recommend chains on the drive axles, so if you need 4wd, and only put 'em on the back you run into a situation where you can have the front sliding sideways in turns when the rear can push while the front only spins. My philosophy says get two sets of v pattern chains so if you actually need 'em then you get max traction in both straight and sideways directions. I haven't bought mine yet, but they are on the list.
That said, you only need to prove the chains (cables are legal afaik
also) are with you and they fit your tires if there is a roadblock. I have seen anecdotal reports of icbc refusing coverage if you don't have the chains on when conditions require it...but also that the cops lower the bar and close the highway when that happens.
Anyway, let me know what price they quote, just in case The Great Pumpkin brings me cash.