Wow, I love the cross bar. I even switched to using a controller just because of it.

Tips:
If you're using multiple pages, put the actions you use the most on all the page in the same place. So you always have cure, common ws/spell available no matter what.

I don't think you can cycle back but you can hold R1 and hit a button or dpad direction to switch to any bar so you don't need to cycle. I have set 8 shared and just hit R1 + dpad left to get to all my cross-job skills like mounts, items, and return. Then I removed set 8 from the cycle so it doesn't flip there if I am flipping through the rest. Once I used the skill one R1 press gets me back to the home set.