This is the perfect place to conclude your evening in Scottsdale. After you have dinner at FnB (you did go to FnB didn't you?) you can just take a short walk to Kazimierz. FYI, the sign that says, "Like all good speakeasies, the entrance is hidden in the rear" isn't a joke - you enter at the rear of the building.
It's a very relaxing environment. Comfortable seating (you can reserve a couch but I think there's a $ minimum) and there is live music every night. They do serve food but the whole point of a wine bar is to drink some wine. I dare you to ask for a wine they don't have - their 75 page wine list has over 2,000 wines ranging in price from $10 to $10,000 (no, that wasn't a typo). The wine list is actually sorted by price which is a nice touch. Unless you're planning on spending an hour or so looking over the wine list I suggest you look at it on their website before visiting. Another option is to ask for the "Nifty Fifty" list - it has their most popular 50 wines.
Go...sit back...relax...enjoy some good music and some wine.