I couldn't find anything about not using chains over snows.  I would do it.

Remember, chains are an emergency item.  You use them when you need to and
remove them when you don't.  They are amazing when you need them, and it
really sucks to have them on when you don't (like when the CHP says you have
to and there's only an inch of snow on the road.)

Just try them out ahead of time, make sure they clear the wheelwells, and go
slow when you have them on.

Raymond

On 8/29/07, Dan Barrett <dbx@pobox.com> wrote:
>
> Looking ahead to the winter, and without inadvertently starting a tire
> thread, does anyone have thoughts on running tire chains or cables on top
> of snow tires?
>
> My bus is a regular old 2WD, and it does okay in the snow with badass
> Vredestein Transport snow tires plus 100lbs. of tube sand in the back.
> However, I do a lot of driving in Vermont, and I can remember at least one
> particularly hairy night last year when the blacktop was frozen, the snow
> was falling fast, and I would have loved to have chains to make it the
> last twenty miles home without visiting a ditch.
>
> Has anyone used chains?  Tirerack.com has some blurb about how chains
> should never be used over snow tires; can anyone elaborate?
>
> Best,
> d.
> 1990 GL -- "Mudskipper"
>