Vacuum wouldn't help. The problem is (at least with SAV) is the glue trends to make the dust stick everywhere.
The teeth chew up the vinyl, whereas a non teeth blade slices it.... That's why I want to get a non teeth blade one day and see how it does.
Production splitters are the same concept, theroll rolls and the top part is a knife, so you're cutting into the material produces a pretty much dust free cut.... I still think buying a toothless saw blade and using that should cut down on so much of the dust theoretically.
I can't imagine what a toothless blade would be used for, nor could I imagine where the material goes between the two sides of the cut. Unless you're spinning an incredibly thin blade, I would imagine it would bury and wedge in the material. Not to mention, where does the heat go? If you were able to rotate the material at the same rate as the blade, you wouldn't generate as much heat, but that would be a challenge.
I was toying with idea to make a smaller 'toothless' blade out of 1/4" aluminum to cut down extra wide rolls of tape, but the conclusion I came to was how can I make a part stiff enough to cut while narrow enough to fit in the space betwixt.
Lay the roll on the rollers, spin it with lather and use the miter saw toothless blade.
Yeah, something like that, though in an ideal world something like a take up reel on your laminator would be ideal for turning, though I wouldn't put a saw anywhere nearby, and I'm unsure how to make a rigid enough blade mount to not wobble all over the place without doing too much to the laminator, hate to give up one tool to make another.
Here's a though, why not pick up a cheap-ish automated laminator, then just run the material through with a blade mounted along the path? It would be slow, and more prone to scoping the material, but it would be dust free-ish and not as 'risky'.