You can technically trade the nether grasps by using the shard exchange, either sell at a good price so can purchase other item need or do a trade with guildie in which u can list quickly at lowest shard cost and they buy then and there, someone might have btc item u need that they no longer use.
The Cloaks you need drop in Crucible and Trial by Fire, Trial can be done fast, Cru bit longer and will want group with you that will give you the claok, I need ee backstabber from Cru so could help there.