If you can find an Apple (Radius with a fruity logo) TPD to go with this system it'd be nearly the Apex of Absolutely Apple.
You're absolutely right in both the points you make there Trash. Where I used to work as an Apple Systems Admin was a design studio that had that kind of a set-up in it. I first thought you meant the TPD as a Radius Tilt/Pivot Display, but then my brain kicked into gear and I realised you meant the Apple Twin Page Display.
We had both those in the design studio, although the Radius Pivots were on the IIci's and the TPD on the SE/30. The IIfx I think had originally a 13" Apple RGB colour display but definitely ended up with a Radius 19" Precision Colour Display. We also had IIntx, IIf and IIg laserwriters an AppleOne Scanner and an Apple Tape Backup 40sc! (which I still have!)
So that lovely lot of platinum boxes definitely represents the 'typical' design studio/service bureau of the day.