I think the important thing is to not run studdable tires without studs and expect them to grip ice. Pony up for a studless-type tire such as the EWC, x-ice, Blizzak, Toyo, et al.
I agree the EWC is a good all-around tire. My only complaint is that to get full traction, it needs to slide a little - which the electronic nannies won't allow. Hence, it feels slipperier on ice than it really is. Tire rack also alluded to this quality, saying you really have to switch off the traction control to get good bite. Too bad there's not an ABS off switch, so the braking could be better. It has been pretty forgiving in the tread wear department, and if you've seen me drive around town, you know what an accomplishment that is. I'm very lucky to get three seasons on a set of Winters. I've never run the Toyo, but it looks like a great concept and is designed to work without studs. I say try them and report back.