Okay Yarr's Build - I used that same exact build with a few changes ( imp PWS for example = not worth it). Its fine for Soloing and Pvp being a good mix for both. If you decide to go with this. I reccomend adjust it to. Drop Imp PW:S, consider some points in silent resolve, particularly important since you're horde side, and if you join a guild that will do BWL. If you do MC primarily you can safely skip it.
Consider Imp Mana Burn Or Inner Fire or More Silent Resolve instead of Force of will. Inner Fire = live longer and Mana Burn is a great spell to use on paladins and opposing priests. These talents may actually help make up for the lack of pvp versatility that shadow spec gives. Holy side your specis fine.
That other build- Again with imp PW:S... and Wand spec. Ew. martyrdom or Silent resolve. please!
You could consider droppign Imp Renew for The increased smite dmg/ + 1 crit chance if you wanted to Eke out a bit more dmg from it.
Spiritual Healing Isn't effected by + healiing gear, so ocne you start rankign down your heals it becoems quite a sucksy talent. Thus its quite acceptable to skip it.
Spiritual Guidance is a decent talent though useful in many situations. Its not overwhelmign but it affects every spell so its good shit. Just remember no pvp's in spirit gear, and end game spirit itemization is kinda shitty so.
http://www.wowhead.com/talent/?bxTMsAVoobEzI is my current build. Some things. 1 my damage sucks. blessed recovery sucks. Spell warding is actually an excellent talent, I love it dearly, but you give up a lot to get it. Namely the faster casting gheals/smites which hurts my mana efficeny in raids and my ability to use spells other than SW:P and Mind blast for damage in Pvp.
Some builds I'd consider using ymself:
http://www.wowhead.com/talent/?bxrMsVVoZbAtccb This gives you Smite nukage, heal Rnak 2 spammage and inspiration for raids. All the efficeny talents in Disc, and has a free points for your discretion. Flaws = No PI for that "ZOmg wham need dmg now factor".
Variation - drop 1 from spell warding and get the longer range on smite. All in all its a raiding build with some toys for smiting.
http://www.wowhead.com/talent/?dxG0sZfhtcc0qZeM0z this is for the Raider who can't give up Mind Flay for Pvp. You Got Midn Flay for Runners, SW:P's longer duration, a chance to stun, a chance to get a boost to dmg from spirit tap.
Its weakness is frankly that it doesn't have any of the cooler toys from later in shadow that make blackout, Mind flay, and SW:P own so hard. and Again Spiritual guidance's weakness once you're in pvp gear.
In any event the key to remember that you are making concessions to keep damage/pvp versatility. You won't have the gear to be an uber healer, and you won't have eveyr last healign toy and talent. The idea is to pick up the key ones ( inner focus and meditation at a mininium) and then spare what poitns you can for the pvp DPS toys.
Anyway after all that if you like your build just drop imp PW:S for Silent Resole/martyrdom, and one force of will for divine spirit you'll probbaly do fine for yourself. The builds I offer are jsut for comparisions of other optiosn and what they try and accomplish. its ultimately personal choice and all that, and I probably wouldn't play any of them as is =P