I’m full of anticipation here....
That dive / keep read has to happen with the DT close enough that he can’t recover from the wrong read. From the pistol, unless you are delaying for the DT to overpursue upfield, I agree his pursuit angle takes both QB and BB. But if you delay for pursuit upfield, the mesh is happening -3 yards with a DT -2...better hold blocks!
Trying to remember where I’ve seen it... I’m sure several do it... but I’ve seen the QB in the pistol / shotgun with BB mesh actually moving toward the line. I don’t think it’s a midline play, though. I thought it was off the DE.
I also may be making stuff up... it’s getting late.