Ouch 45 Auto. Not very nice.
And you know, under the right conditions, for some people I can see it. If they're the careful measure-twice-cut-once sort, it could be just as fast to batch as progressive. Which is hardly from a lack of intelligence as much as an abundance of caution. If they stop pulling the handle every time to check powder, examine this, that and the next steps the whole way through, it's not much more than batch loading with one handle pull.