ive been using something like it for a while but instead of Healing Focus i went with all 5 Holy Specialization, and swapped enlightenment with focused power in the disc tree
i get very nice survivablity, especially with body and soul, and all the pushback reducers when taking a crit
Re: Some Opinions on a very strange Holy/Disc PVP spec
Well no PS or no GS makes it a spec with no "oh shit" button but i guess it could be good spec with a dk or something you dont have to heal that much since you can only heal with casted heals and if you get interrupted you will be in deep shit if your partner is on low hp. Mana could be an issue as well.
Re: Some Opinions on a very strange Holy/Disc PVP spec
As said, no "oh shit!" button the biggest draw back, also ditch range for spirit of redemption and lightwell.
Work ok with a ret pally(having bubbles oh shit) or a good peeler. 3s prob again with ret + rogue/war.
5s the cooldowns are just too useful vs focus.