Plinius 8200 MKII biamped with the 8200P?

Has anyone ever tried this combintion in a vertical biamp configuration? Which amp goes to the highs and which to the lows? What has been your impression of vertically integrating these amps verses runnning on the MKII alone?
What speakers do you use in this setup?

I know its a lot of questions but I am wondering about this biamp setup?
Thanks
ATS