Saw a lovely engraved one in House of Fraser. Considered buying it for a family member and then thought about it a bit... Leaving aside the fact that they can look lovely, who would actually use one? Our attitude towards booze has changed so much that if anyone I know actually took a snifter from a hipflask in real life these days I would assume they had a serious drink problem. And would probably be right. Just that back in the day people didn't turn a blind eye to it....