Yes, the Loyalish Shield of Honor is probably the best groupable back item you can get on the Combine atm.
If you plan on going 1 handed at all, you may want to consider the , which has decent stats for its relative difficulty.
There's also from the named Holgresh in the Miragul's Menagerie LDoN.
There are also some good upgrades from the named mobs in WoS and MPG like . Truth be told, now that the Combine is at OoW, a lot of the solid groupable gear upgrades will be from these two zones until you hit lvl 69 and enter RSS.