No Backup Plans worth it? New Destiny player here, I just hit lvl 40 and after a couple of Strike playlists I had enough Strange Coins for an Exotic from Xur.

I opted for the gauntlet Engram rather than the helmet he had this week, and ended up with No Backup Plans, a gauntlet specifically for the Defender Titan subclass.

I haven't even unlocked the nades on that subclass, never touched it, because I decided to go straight for the Sunbreaker. The gauntlets are pretty bad for both Sunbreaker and Striker, despite me using shotguns fairly often.

Is the Defender viable with these gauntlets in endgame, or should I just use them until I get something better instead of building to go along with them? 
Seems a shame to let an opportunity for a build go to waste just because I haven't used the subclass before. I just don't know how good the Defender is right now.