I had picked up a few decent D3-FNC pieces so decided to give this a go about a week ago.
The differences between my build and S.U is I use a nimble holster because it is so much better than the D3-FNC one I have, and some accomplished knees as I don't have D3-FNC knees. If I can get the D3-FNC knees I will replace the HE knees for a pair of savage gloves.
I also run tech support - active skill duration is extended by 10% for each kill...basically means it is almost impossible for the shield to go down during a fight. This is in place of One is None as I have meticulous on my SMG (along with Destructive and the obligatory Predatory). As usual, I don't use a heal skill, the second skill is the pulse for the extra damage.
As I had never used the shield before at any level, took a while to get used to it but once you get the hang of it (and the visuals of the sparks flying off the shield!) it is quite OP and makes a nice change to my usual play style.
Get in before it is nerfed...now that S.U has a done a video of it, the set is on the nerf radar!
Cheers