"Any normal ethereal should be kept well away from combat. honour blades are a bad idea. They get the Ethereal killed, which is a bad idea."
I wouldn't say that. I had my Ethereal guard my Firewarriors in one game. It was about 750 pts. My opponent had two Ultramarines tactical squads and one squad of 6 terminators, one holding an assault cannon, one with heavy flamer, and one as a sergeant. Also, they were accompanied by a Chaplain in Termie armour and a Librarian similarly equipped. Basically he harassed my units with the tactical squads and ran his termies up the middle. Long story short I killed every terminator with firepower except his chaplain. I used my commander to block off the oncoming assault but eventually my commander died. My firewarriors stayed put to rapid fire and kill the stupid chaplain and my stealth suits moved into range to blow him back to his precious emperor. Well, my firepower failed me (I'm still not sure how) and the chaplain survived. My Ethereal bought the firewarriors enough time to move away and prepare to rapid fire once again. (In the end, though, the chaplain survived as well as the sergeants of both tac squads and they finished off the firewarriors, Ethereal, and stealth suits without further harm. It was vey very bad.) Negative odd rolling of dice aside, the Ethereal performed rather well and bought me enough time to mount a counter strike. Although it failed it was not due to the Ethereal. By all rights I should've won because of his noble sacrifice.