They are really awesome, I also would be very interested in some of the models (and I already have an arcade joystick for my Coleco - with keyboard)
In any case, I grew up using the typical Atari joystick with the button in the upper left corner, so right hand for the stick, left thumb for the button.
When did we swith to left hand for the stick and right for the buttons? I'm not left handed and always had to cross my arms to play at the Arcades.
If you have a "lefties" model I'd be all over it. Ideally for Atari also (Atari specs are good for a lot of systems) ...