Level 116 keeper here, got a QL 152 Sword of the Illuminated to replace my Styg and to tide me over until a FBR and/or a decent alien sword, all I can say is: wow! On anything that's not a heckler, this thing gets the job done well and I can sit at 50% on the agg/def bar and hit at 1/1. Well worth the expense and moreover it looks nice.
It's too bad that the Panther, which is a comparable weapon, is for Enforcers and Meta-WTFweretheythinking?-physicists. There's really no reason for Keepers and Shades to wander into CoH.