Hi martin, Ventura is great always had them on my bikes.
I have no pics of the V11 packed up but here s my last bike which I pack the same as the Guz.
-rack faces rearward (sits on seat otherwise, wont fit down)
-seat cowl off
-pack faces forward
-No pillion,s but if I was to I'd face it rearwards)
-I'd expect so, so never tried (dosent make sence to)
-no, but have seen it done looks very stable and safe
ps: note the sport rack/bag, awesome for day rides (seat cowl on).