Slotting mid-tier demons for heal?

[biostem]

So I recently rolled a demon/storm MM and have been loving the hell out of it, (pun intended).  I noticed that one of the 2nd tier demons has a heal ability.  Is it worth slotting for it?  I have O2 boost from storm, so it's not a big deal if I don't, but it seems pretty effective.  Your thoughts?  Thanks!

[DocMidknight]

On my demon storm I put to heal IOs in the demons and skipped 02 as I leveled and I put in hold IOs in demon prince I believe until I got the set pieces I needed.  Worked well enough and kept things alive longer but after a while it's not needed as damage output overtakes the need to heal