I think that, unless you have only wine geeks coming in for dinner, a list divided by style is the most effective. Does your average Joe know that he could find a nice sauvignon blanc in: Loire Valley Whites, Australian Whites, New Zealand Whites, Californian Whites and Bordeaux Whites?? And why should he (or me, for that matter) have to turn so many pages just to find all of the sauvignon blancs??? When I go to dinner, I usually know what kind (varietal) of wine I'm looking for, so I'd just as soon find them all in one place. Even if that oak-bomb Aussie shiraz is on the same page with the smokey, olive-y Cote Rotie that you've been eyeing...... The most intimidating thing about European wines for most people is that they simply don't realize that wines over there are named after the place that they come from while wines over here are named after the kind of grape that makes up at least 75% of the wine. So, you'll sell a lot more Sonoma chardonnay then White Burgundy if you don't let the people know that White Burgundy is, indeed, chardonnay. Ditto Bordeaux with cabernet and merlot. Once people understand this, then they can start to explore Old-World wines without a crutch like a winelist divided by styles.