I've always kind of hated drive over decks. I literally just take decks loose, maybe lift the front end with the loader if i need too, then just pull it out the side. Quicker and easier than drive on, which most of the time your tires are just going to make the thing skid around on the ground, and you got to get on and off the tractor a couple of times to reposition the thing. Have no experience with this new easy-on thing though, but just looking at it, looks complicated and expensive to fix what to me at least is a non-issue. I always worry when you add unneeded complication to what is supposed to be a simple machine, always causes issues in the future with maintenance and adjustment and all that.
My BX I used to pull out the side (hard work), or I'd lift the front wheels with the loader, then pull it out forwards by hand (a bit easier).
On the B the deck is heavier than I want to lug around. Driving over it is easy, and it never skids around. To be fair, I do it on the lawn, so it's hardly going to go anywhere. I can just drive over it without the ramps, but I tend to put them out because they're there.
Lining it up when you put it back on used to be a real bear. Then I worked out that Kubota had already taken care of that for me, I just didn't pay attention. If you lower the lift arms before you drive over, they have a little funnel on them that auto aligns the deck as you drive into it. And if you look over the side far enough you can actually see the arms, so I jump off, unsnap the latches, then jump back on and lift/lower the arms a bit, jiggle back and forward on the HST a bit, and they pop in all on their own. The only annoying bit is attaching the drive shaft, and that's way easier on the B than the BX, because it's a good few inches higher off the ground.