I absolutely love the Really Right Stuff L-Backet that I use on my 30D however, my Canon OEM remote release connnection socket will not fit when the L-bracket is in the portrait position because the socket is too large to fit under the L-bracket.
I felt that this was no a great disadvantage compared with the many advantages of the L-Backet - especially when shooting in the vertical position. I either used the shutter release button or the self timer (if the shutter speed was very long).
However, I have been pleased to learn that the connection socket for a cheap eBay cordless release I recently purchased can be used when the camera is in the vertical position. That connection is smaller than the connection of the OEM corded release.


