I don't know anything about proprietary reverbs, I'm afraid - particularly hardware units! Sometimes you can tell things about a reverb's internals by looking at impulse responses, but I've always had more fun designing something from scratch.
It's a discussion of some of the finer (and coarser) parts of reverb design and includes comments from Casey Dowdell (Bricasti), Sean Costello (Valhalla DSP), Matt from LiquidSonics, Urs Heckmann (u-he), Chris from Airwindows, Stian (Acon Digital) and other top-notch audio DSP gurus. They're not giving away trade secrets but there are fascinating discussions around reverb design, topology, theory, and of course perception.
