I disagree that 10 seconds is useless. In PvE 10 seconds is all you need because within 10 seconds all 14k or whatever damage will be absorbed anyway. A couple things off the top of my head that I can think of that it would still be plenty good for.

Novos - use it while hes casting blizzard - absorb all damage from 1 blizzard
Prince Keleseth - his SB spam will probably eat it up in 10 seconds

And for PvP you really only need it for 10 seconds if your team is in the process of getting AoE'd, just drop it and let it eat up a bunch of damage.

On a side note, I take everything I see from EJ with a grain of salt. Yes its all theorycrafted and most of it is good advice. The problem is, no one there multiboxes, and honestly even if something is proven to be amazing for a normal tank, dps, etc, it really doesn't mean its the best for a multiboxer, and in fact some things that people brush aside as just "ok" might actually be quite awesome for a multiboxer. I see things like this plenty often, especially regarding things that make me have to move less, etc.