Well, my first roll (processed in Df96 is a little disappointing, but at least I now think I know why.
The film still looks "milky" in the frames, less so in the rebates, in reflection -- but now I think there are two things going on. First, my Df96 may be getting tired. It's only had 7 full rolls and a shorty, but it's been almost double the recommended shelf life since I mixed it. Bigger issue, however, is that I think I fogged the outer layer or two of the film -- the first time I tried to load a cassette, something went wrong and the door of my Watson type loader popped up while the gate was open. I closed the door, closed the gate, and discarded a foot or so of film (at least one turn on the bulk roll), but this strip shows some fogging (especially on one edge), as well as being underexposed a bit, and the lens misting due to being colder than the humid air.
I finished off the second test today; there should be no lens mist, any fogging remaining from the loader door incident should now be confined to the extreme edge (rebate only), and most of the exposures were made with bluer light, so the film should have much nearer its full speed. I plan to process tomorrow in my replenished Xtol stock. We'll see what I get.