They are a bit special, but I'd be frightened of using them all the time because I'm clack-handed
I'll stick to using my Ravenhead Siesta half pint tumbler/beer glasses. I just love the feel of them, but replacements are really expensive!
Just spotted that the lilac coloured glass - back row lefthand side of the pic., contains neodymium! I've just taken it a walk around the house and it has turned pale blue and green under different lights,
which makes them a bit more interesting, and hopefully easier to I.D.