Ok, what do you consider "deep snow". Because here we are wheelin in 5, 10, even 15 foot deep snow. There are definetly NO school buses or snow plows anywhere in sight, and absolutly nobody with chains on. If you're wheelin and gettin on it, with your tires aired down, just think about what those chains are going to do to your rig when they let go.
If your not wheelin in "deep" snow and your going to run chains, put them up front. Having control of direction is most important. Traction won't do you any good if you can't keep it on the road.