I came back from Oz at the weekend with a full size umbrella in my hand baggage. No comment at check in, security or on board. I had a window seat and just lay it on the floor with the handle hooked around the support for the seat in front. No one said a word although i was in business which shouldn't have made any difference. I was concerned before the flight and checked the airlines rules, it just said a sharp pointed umbrella would not be allowed..