Board Thread:Speculation House/@comment-12705716-20130802132823/@comment-23784953-20130802133217

So is Weiss.

But only because Monty himself is also a lefty.

Also, it's slightly notable in Ozpin as well. He holds his mug and cane with his left hand. Though that can be questionable since I've seen righties who can hold a cane both ways.