I've seen them used at the local grocery store at night. It starts in under tile and rolls along basically breaking up the hard vinyl squares loose and into smaller pieces.
Works slick and fast on hard vinyl tile squares but since sheet vinyl doesn't get that hard and break up, I'm not sure it would work so good but I guess you never know till you try. It still leaves an adhesive residue but at the store, they just retiled after taking what they could get off with a scraper. They would do a couple aisles a night. They had a contract crew do it. I tried to talk to one but he had a comprendez englais problem.