I'm thinking about ordering a Really Right Stuff ballhead and an L-Plate for my 6D. I'm just curious, how does the L-Plate slide out for portrait orientation? I see it slides out a bit to make room for shutter release cables and whatnot, but how do you do it? Do you have to loosen the bolt on the bottom every time? How solid is it, does anyone have issues with it slowly slipping downwards when sitting on the tripod?

