Last weekend I went out with a flask of Laphroaig (some damn good scotch), and was just sipping that most of the night. I let a bunch of my friends have some, and always came back with some left in the flask. It's a great way to drink really delicious scotch, share with your friends, and drink less.
Perhaps worth saying as well, please do not buy a nice whiskey, and ask for coke mixed in. If you tried that in Scotland or Ireland, they would at best refuse you.