I have been working with various Canon TS lenses on a 5DII. My basic conclusion is that I prefer focus stacking with Helicon Focus in almost every case where super-sharp, deep focus needs to be maintained.
TS solves a wide variety of receding plane problems But in many situations such as when there is uneven ground very nearby, they can not offer a fully satisfactory solution and there is always a certain amount of image quality compromise even with the best TS lenses. I feel that I can get significantly better looking high DOF images from stacking, versus using TS lenses.
In regards to re-purposing a classic view camera, note that DSLR sensors are located somewhat back from the lensmount opening, which can limit the amount of off-axis adjustment. Also, DSLR sensors may have piping and other diffraction-like problems when light hits them at extreme angles.
Setting up a TS shot takes a certain amount of time. So does processing a focus stack. So one trades off time in the field for time in post processing. But more significant for me is the fact that I can shoot a focus stack in the field simply by hitting the tape marks on my lens, without having to squint through viewfinder or poke some little magnifying window around on the liveview screen. I feel I can always come away the field with a workable set of focus stacked images, but I would be much less confident about whether or not I had set up the TS lens in the best possible way, especially in marginal light conditions.
If you feel comfortable with view cameras, you might consider scanning camera backs.