I see it’s amateur drinker hour over here. How am I supposed to trust someone with such a different lifestyle from mine?
Stupid posturing aside, I have a serious concern: glass is a terrible thermal conductor and water is even worse. Given that, I’m curious how well a cold block on the underside of a glass wall keeps the body of the drink cold? Have you considered putting a metal plate in the center of the bottom or rods up the sides to conduct the heat from the bottom better? I mocked this up to show you what I mean:
EDIT: I didn’t realize the bottom was already stainless steel. That will help a lot. Does it come in contact with the liquid, or is it below a layer of glass?