Just popped in for a catch up.
My tu'penny 'orth....... Thomas Webb made jugs like this, cylindrical, clear with controlled bubbles. I can't say that I can remember seeing them with glasses. I would have expected those to be tall and cylindrical as well

I have a version of the jug with a glass stirrer, so suggest cocktails, or Pimms, rather than whisky or sherry, both of which would normally be decanted, not 'jugged'. Also this is a more likely use at that time.
Nigel