I stopped using WXHB for my second hotbar, the double tapping was both finicky and tiring to do. Now the only combat actions on my WXHB are sprint and limit break, since all jobs use those, while the rest is just menu buttons and mounts.

Instead I use the expanded hold crossbar (LT + RT and RT + LT) for combat and just remember which "side" has which actions, like my aoe on all jobs are on RT + LT face buttons. I wish SE implements a way to see our expanded hold crossbar instead of the WXHB, currently I add a cosmetic hotbar below my main crossbar, in order to track cooldowns of my expanded hold actions and which "side" they're on.