I have read a few threads about questions concerning Prot. spec. warriors. More specifically, pve concerns and leveling.
I leveled my warrior all the way to 70 with Arms then finally fell to the DW Fury lure - and loved it for the most part. My DPS @ 70 suffered and was not up to par. However, my guild was requiring me to tank more and more instances - Sooo, I said goodbye to my fury build and went prot.
My concern about prot. speccing was questing. I read forum after forum saying prot. questing was a no-no. But, wow - how I was amazed! After speccing prot and changing gems and gear some - I was able to quest most of the grp. quest we are swamped with at later levels. Solo play became much more surviable. I was able to solo all the netherstorm grp quest with little problem. My strategy changed from mob to mob. Melee elites were much easier than casters. However, with casters, just focus on spell reflect and shield bash and they are soloable too.
Now, it does take a fair amount of time to quest b/c it takes longer to kill the mobs. But, my downtime from corpse runs and using consumables is reduced drastically.
I absolutely love Prot. spec. Not to say I don't miss the potential of DW fury - but love prot. spec.
Just wanted to share that prot. specced warriors can quest to - and can quest effectively.
CC