Upload & Sell: Off
I guess, is it more of a mistake to leave this gorgeous glass at home because you don't want to deal with the fully deployed size of it, or to shoot without the hood period.
I always use the hood when I'm setting up to shoot with this, but once in a while when I want to walk around with it, the hood just doesn't work for me so I leave it at home. I can whip it out of my messenger bag, grab a shot or two, and stow it away without attracting too much attention.
OTOH, if you want to make a public statement, start conversations, and hand out business cards, don't leave home without it! (the hood, that is)