Cycling tights--good for winter running too?

[str8flexed]

I'm currently in the market for some insulating tights to run in when it's cold outside (<45 degrees) and I know Underarmor has some "coldgear" tights for that purpose, but those run $50. I've been looking online at the sales at Nashbar/Performance and there are lots of cycling tights to be had for $25. Are these essentially the same thing, and will they provide good insulation for cold weather running?

Another question, how do I make sure I don't have a padded ass? What does it mean if it says it has chamois?

Thanks!

[timmhaan]

the chamois is the padded ass. that can get uncomfortable for running or walking around.

[str8flexed]

the chamois is the padded ass. that can get uncomfortable for running or walking around.

Great, that's what I was thinking it meant. I definitely don't want chamois then.

Can you take a look and tell me what the difference between these 2 are?

Performance Adventure Tights
http://www.performancebike.com/shop/profile.cfm?SKU=24860&subcategory_ID=1121

Performance Century Tights (w/o chamois)
http://www.performancebike.com/shop/profile.cfm?SKU=20840&subcategory_ID=1121

[caloso]

The Adventure tight has zippered ankles, the Century does not.

[scoatw]

I use SportHill XC 3SP Pants. They run $100. But you can find then elsewhere cheaper. I got them for $46 at Sierra Trading Post. Campmor has them also. These are my #1 Winter cycling pants. They are comfortable down to the 'teens'. Anything lower and you might have to add a baselayer. Cabelas has good PolarFleece also.