This thread got me curious, so I bought two rolls in 120, and will report on what I can whenever I have the time to shoot and process. I have a Dektronics densitometer, so that may come in handy.
Alright, I gave it a go in my Rapid-Omega (6x7). I set my EI at 320 and developed in XTOL replenished, for 7 mins. It was a typical fall day, not too sunny, not too cloudy.
The negs are drying, the contrast is looking OK, at least they're not overdeveloped nor are they overexposed. I'll be printing in the next few days.