Hello !
I own a Durst Laborator 1000 with the condenser head (ancestor of the 1200) and an Analyser Pro.
When I got it (years ago) I read this, as you did, and thought to give it a try.
Well the result was quite impressive ! Of course I calibrated it for the papers I use but out of the box it was *already* quite good !
So do not be worried ! Talking with Richard, he told me that I would have found greater discrepancy if I had used filters of another make than Ilford.
One calibration trick : if you want "quick and dirty" calibration get the unknown paper data sheet, calculate the paper speed ratio from Ilford's MG IV and set it in for exposure compensation, then input the contrast values into the contrast settings. Of course you'll need to fine tune the values, but it should be near good.
Hope this helps.