The only guy I know that has been around the bigger shop machines, said it was just as easy with hyd. bead breaker, and irons. Their boss bought it thinking it would save time/ workmans comp claims from back injuries, etc. It ended up sitting in the corner of their shop and no one used it.
If you're into loader/ scraper size tires, one of the trucks with the knuckleboom and grip arms would be a better use of the $$$. They handle those big tires with ease.
The shop machines are big and take up a bunch of room in a shop.
I do have one of the fancy blue bars that make dismounting a little easier on truck tires. I think its easier than standard irons. But I just use the regular irons to mount.