I recently started a thread asking about pushing Tri-X in Barry Thornton's Two Bath Developer because I had planned to soup it in Diafine but then wondered if I could develop it in BTTB. I decided against it because I had a few shots on the roll that I didn't want to be ruined, so I ended up developing in Diafine to be safe.
But then I still wanted to try BTTB and so I shot a roll of HP5+ and on several of the frames shot succeeding images at 400, then 200, then 800. (metered per spot meter, then opening up a stop, then closing down two stops)
On each set of images I found the same thing; the 400 and 200 showed little difference but the 800 had more contrast without complete shadow block up and wasn't severely underexposed, all of the negatives came out nice and thick.
I really like this developer for this film. The grain seems pretty nice, and the tones are nice and all of my highlights had nice detail...no blowouts.
The second shot is of a truck I saw in a parking lot. Shot at 400.