PZero Nero M&S - Any good in snow?

I am looking for some good all around tires that have some snow performance.

The PZero Nero M&S are top rated by tire rack.

The tread design doesn't look that good for snow. But looks don't tell the whole story.

Has anyone run these tires on a Z28? Where you happy with them? Any other suggestions on tires?

I will be running the 275/40/R17 size.

Thanks

Z28