I just started lvling WHM so I can sub for BST later and I had multiple, harrowing encounters in the Highlands area and I just wanted to share my experiences.
so I was lvl 12 with /BLM and fighting a DC Mist Lizard when the ML was about 2/3 dead another DC ML spawned right on top of us and linked. I panicked but didn't run. the first one falls to DIA damage and I start attacking the second DC ML. I have refresh from Fields of Valor but my MP is still draining away and my HP is about 1/2. about half way through the second ML fight a third DC ML rounds a corner and links again! they start doing a few crits and I use BENE. eventually I killed both and I had 10 HP left and 2 MP with refresh still active. Heart was pounding on that one.
3 DC mist lizards with overlapping linkage and I survived as a WHM.
later the same thing happened again with two DC mist lizards and this time they used Stonegaze and I still survived!
then that same night while fighting a DC Quad (Amethyst I think) I got linked by an EM Quad at the end (Onyx I believe). normally I would not even try an EM at full HP/MP with any Job at lvl 14 (by this time) but I had no choice. the fight was long, I used my 2hour again (it was a long night) and I was near death, but, good ole DIA saved the day and I survived a DC + EM battle as a WHM/BLM. The darn thing even used Cure II at one point!
I should have died 3 times that night, but, I survived all encounters. either I am one lucky Star Onion Brigade member or WHM is not as squishy as I thought it would be.