Well, no Camaro here, but i have had winter tires on my Caprice since i got it (in winter). So, more tires, more opinions...
At first i got some Uniroyal TigerPaw winter/ice tires, and i give them a 10/10 for grip in SNOW AND ICE. Great plowing, great ice traction, my favourite tire so far. The only downside is, they are a soft compound tire, so i only got three seasons out of them (mind you, i have a really heavy right foot.)
[img]http://cobaltss.net/gallery/files/4/5/2/3/91CapriceClassi****.jpg[/img]
Next i got some Bridgestone Blizzak winter tires, and i give them a 8/10 for snow grip, and a 6/10 for ice grip. These are a harder compound tire, and are lasting longer then my Uniroyals, but at the expense of (IMO) poor ice handling. Not going near these again.
I don't even know what i'm going to use on the SRX, but my uncle has had really good luck on Michelin X Ice tires. So i'm leaning towards them.