Hmmm. I think it's a net loss to go to the ettins, but not a big one.
13 str is 3.25 parry rating. You gain that, and 12 mastery rating, for a total of 15.25 avoidance/block ratings, and a loss of 53 parry, for a net loss of 37.75 rating in avoidance/block type stats. For this, you gain 99 armor, around 300 HP, and .64% crit. I don't think it would be worth it to me, but it's really not that big a deal either way.
Kathy, I said, "I'm lost" though I knew she was sleeping
I'm empty and aching and I don't know why
Counting the cars on the New Jersey Turnpike
They've all gone to look for America