If I were to use spell shield -- which I'm going to try in the future-- the build would be pretty basic.
I would use:
A Mo/W (55 of course)
18-20% longer chanting sword with a maxed wand to switch out (so you can kill nightmares easily)
And the -50hp grim cesta of course
Skill wise-
Prot Spirit
Bonetti's D
Heal Breeze
Shield of Judge
Spell Shield
Sprint
Mending
Balths Spirit
Only reason I am taking sprint is that it will act as a "personal saver." using Spell Shield will require timing. In a Mo/W I use BD as my source of anti-interuption -- but of course it needs adrenaline-- And you need to be casting a spell during Spell Shield so Mending would pretty much work as a Spell Shield trigger. And incase you realize your enchats are going off you can trigger sprint and run away and cast PS or lose your arggo. I can see where Spell Shield would work -- but I still prefer 2 man UW over solo because of time-- and Soloing farming isn't like it used to be. It's no longer fast-paced, so it loses its fun.
--God I miss griffons and UW w/o nightmares--
But it helped save our GW from going into economical frenzy.