Check these chains out as an option. http://superior-tech.com/terragrips_01.php

I think you'd be just as screwed on ice with those as with normal tires.

This is what I use on blacktop on my BX. It also has loaded tires and 220 lbs worth of wheel weights.
www.tirechain.com

I used a 1650 for awhile pushing snow. Had chains like above plus about 150 lbs of wheel weight, plus me. The thing was almost instoppable in snow up to about 10".

I now have another tractor for snow. 1250 with the small CC weights and tire chains. This combo works pretty well but not as well as the 1650 did.

If you have plain asphalt, I don't see where tire chains will hurt a thing. If your driveway has been sealed, the spinning chains will leave white chain marks in the surface.

No need to worry about frozen, hard packed snow or glare ice as your blade won't do much to it anyway.

guess when you think about it, fluid does put some weight where needed ("a pint's a pound") so I guess 2 gal per side would add 16 lbs on each side?

I did it for years but have to say it was a PITA to add (black and decker used to sell a hand crank pump that exactly fit a tire valve nipple that made it easier) and worse to remove. Removable weight on the rear and more on the front worked better with chains as long as I did small passes with a sharp angle on the plow.