Why not take the Tyros approach then and mount some speaker brackets onto a 9000 Pro or onto your keyboard stand if it's that important to you?

IMHO the Motif ES 8 has the best keys and keyboard action I've ever felt in a portable keyboard... but at 66lbs it ain't easy to call it portable! It's now possible for me to use my ultimate arranger rig on stage: the 9000 Pro and the Motif ES 8; but somebody'll have to be paying me very good indeed to use both because toting the Mo is a lot of work.

Even though the keys and action on my 9000 Pro are not what I have in my Motif ES 8 I have no problem using the 9000 Pro's keys on stage. Never even thought about it until this thread came up. I guess you could use the Motif ES 8 with something like a QY-700 (there's plenty of acreage on the top of the Mo for this) and some speaker brackets for Tyros-like monitors on the keyboard or the keyboard stand to get the best of all worlds. I'm big on the one-keyboard approach too and I don't want to burden myself too much so I'll be sticking with the 9000 Pro alone on stage for now.