I do not see why they would be better or worse than regular LP cases. I do not think that 45ACP uses many powders that would require the little bit of extra 'flame' that a LP offers over a SP.
The only thing I find dangerous about those cases, especially if you pick-up range brass as I do, is having a few of them in a Large Primer batch of casings and try to squeeze a large primer in the small hole with a progressive, potential blow-up... good thing Dillon puts a steel shield around the priming area of their presses.