Why don't you want to use Photo Stream? I know you the OP mentioned that you s/he don't doesn't want the pictures to show on your his/her iDevices, but that seems a much smaller price to pay than having to ship your whole Library between machines or set up sharing.
My wife is an avid photographer. She uses iPhoto. We each set up and use shared Photo Streams to share pictures -- even when we sit across from each other at the kitchen table. As a bonus, we can comment (or "like") and the comments are saved. And if we aren't both in the same room, it allows us to share when we can, and view when we can. Personally, I think it has made us more attentive photographers, because instead of saying "Hey -- look at all these photos I took today!" we now select the ones that are meaningful to us, and pay more attention to them. "Maybe crop a little more off the left ... ?", etc.
I've been stupid more than once today -- am I missing something here?