That is true, I mean, you are going to take some massive damage, though honestly, with the said healing that you are going to be taking from HOT's and the 60% from Blood Aura, you are going to Survive. I already stated that I was living through Bosses with Hysteria*4 with no healers by myself. Hopefully the tank can keep the mob off of you, but with that amount of DPS you are going to be producing, not sure if he is going to keep it or get it back once you land a few lucky crits (crits that are going to be massive) With my current spec (bloodworms heal for a lot as well) you wouldn't think so, but, my (or the said spec I am using) works out rather well with hysteria. With 20% crits on all toons, able to crit for 2K+*20% = about 400 to being healed.
And then throw on mark, you are going to be getting smashed in the face but getting healed*5 the damage he is beating you in the face for.

Tried it last night in Nexus on Ormorok the Tree-Shaper, Worked out rather well. But can't say I would use it all the time. Was going to try it on
Grand Magus Telestra, but then rememberd that she likes to play Yo-Yo with me, and I would die...

Throw in the 15Marks for 20Seconds you are NOT going to die... lol. Now those said 10SECS are going to be the clincher... save the IBF, the Regular heals, and whatever can be thrown at you to keep you alive. You also have your Rune Tap in those 10 Seconds.

If I could get some People on RUIN BG's, I would like to test this out and see what happens.