I like gear swap on FFXI, it's like you never ending finding the best set for every situation (yeah, call me elitist or just someone that is interested to my job's potency), it's a good timesink also, farming thoses gear, a lot of research to find the best set to cure, or to deal some magic damage, or to ... blablabla.
For FFXIV, i really don't care about gear swap, i'm starting to facepalm to the auto-attack as ranger with only 1 hands to punch, but that's all.