Your basically making the other healer work 2x as hard and then taking credit saying "well I did this or that" "I raised these people"(which could have been done by their own team)

I'm not saying never do it. But if your going to, then do it appropriately. With a party of friends. Not Df. I personally wouldn't mind since I'm a sch and can be boss at healing everything, but other party's may mind, and very well could kick you for it.