Sock Advice?

I'm hoping a blog reader has experience with socks made from a yarn like this one.

http://www.knitpicks.com/yarns/Gloss_Fingering_Yarn__D5420151.html

This is Knitpicks Gloss Fingering yarn.  It's 70% merino wool and 30% silk.  It comes in absolutely beautiful colors.  No nylon; I usually look for yarn that has a bit of nylon so it will maintain its shape. So, I'm hoping someone has experience using a combination of fibers like this and can let me know how well it works for socks. Does it hold its shape through a day of wear?  Are they still comfortable at the end of a day?  Do they wear well or wear out quickly?

Yes, winter is on its way--we may have snow over the weekend or by the beginning of the week.  I'm not much of a winter person.  I love looking at snowy landscapes, but I hate driving on snowy or icy roads--kind of a big deal with a 135+ mile commute.  (Of course, if I worked really close to home and/or could just stay home and bake cookies, make quilts, and knit, I'd probably like winter a lot better!)