i think that v is a little too low..i was considering it, but i feel like the only things that would look good under it are tops with some interest to them. hotcocoa has a wool one that she wore with a tee that has a really cool 3-d flower design on it in her threadstyle. maybe the sweater version would be more versatile because you could layer it more?
yeah, i've tried a bunch of options with mine (which is wool, as lynnie mentioned) but it's also pretty lightweight. i've had the most success pairing it with tops that have some type of interesting detail on them. i wore mine yesterday (see my threadstyle) with the top lynnie described and then i changed my top underneath for night to a contrast color tank and wore it with a long beaded necklace (that was my "interesting detail" part)
i love the deep v-neck styles. i'm so glad they are popping up more and more... they're so fun to layer.