But they can forego some of that green and still be quite good and different from Cab Sauv, i.e. a little brighter and lighter. I've been drinking the OS since I found it in 2000 and it's pretty good, not Cab Sauv and not too green. Mike Januik made one, as did Chat St. Michelle and Walla Walla Vinters, and I think there's a lot that's blended in high proportions by producers like Andrew Will and Cadence.
There's some out east in places like Michigan and New York, but they don't quite seem to get it yet - it's often green but without the bite you get from the Loire versions.
The WA versions kind of have their own style. CA does it differently - Crocker Starr for example makes a version quite different from the CS based wine, but at the same time, not a Loire wine either.
And of course, it makes a most excellent rosé.