Posted for "James Keyworth" <jakey@telcomplus.net>:

 Thanks Mike, that gives me a clearer understanding.
 
 Actually I was thinking a single center-mounted stick and side throttles to
make entry and exit easier, especially for my wife who isn't as limber as I.
 The degree/length of motion of the sidestick appears to be somewhat less than
the conventionally-mounted joystick. That might keep the engineering simple.
 The throttle issue, I presume, would be another matter.
 
 JHK