The A109 we have has an attachment point at the rear middle of the cabin, so if the patient is over 6'0 we can load them diagnaly. We can also swivel the co pilot seat and move it forward.This also helps if we need to load 2 patients. Providing the dual controls are no installed.
I can see the pro and cons for the A109. For our program it works well with Inner Hospital Transfers, and organ harvest flights. Awful in muddy fields!
Just my thoughts...