The Breeze multi-camera software sounds like it could skip several steps in that process, not least by bypassing storing on the sdio card and putting the pages directly onto the hard drive.
I prefer to use the single-cam program connected to two different laptops. You don't get two viewfinders side-by-side with the multi-cam version.You get only one, but can change to the other via a drop-down box. The multi-cam version also completely lack the very useful auto-crop feature. That's the feature that makes me use PSRemote and not Canon's own Remote Capture program. It's saves much work. But the remote capture options of both versions doesn't seem to have been updated for many years. All updates refers to the Photo Both feature. Even in the single-cam version you can only adjust the crop rectangle when the viewfinder is at 100%, and thats pretty small on a modern screen. And it would be better if the live viewfinder coluld be enlarged with smaller increments, like 120%..150%, rater than 200 and 400%
If all the images from both cameras can go into a single folder, already named and sorted in page number order, that could save tons of time. Do you have a workflow that comes close to that goal?
I think this could be a large problem if you happen to miss a page or take a page twice, which I frequently do. I prefer to collect pictures in right and left folders on my desktop. I then use IrfanView to rename them 1,3,5, 7 etc and the others 2, 4, 6, 8 etch and send them to a shared folder. It's then pretty easy to check if I have done any such mistakes. It's where the page orders gets messed up. It's a bother of course, but not really a big deal to fix. After identifying where a page is missing, I take that picture, tranfer it to the desktop with a memory stick, rename it with a letter at the end so it fits in where it belong in the right or left folder and then redo the IrfanView renaming job for that folder (keeping the 'overwrite existing files' option ticked). I need to redo this for every error. It takes a few minutes, but obviously needs to be done.