Well I hope I am not to late to the party. I actually have a Sage EBR'd M14. Here is a little back story.
I shopped around looking for a rifle to build, and found an older Armscorp that was in need of some work. Next, I knew I wanted an 18ish inch barrel, so I ordered a Criterion medium weight barrel and a vortex for the end of it. I sat on those parts for a while until I found the NSG (Navy Seal Grey) Sage chassis I wanted. Had a smith re barrel the receiver and then I placed it all in the Sage. I topped it with a LaRue LT608 (not on their website, but they make it specifically for the Sage) and a set of LaRue rings holding a SS 10X.
My thoughts on the gun...I need to do some friggen push ups, this thing is retardedly heavy. It is short, about as long as my M4gery, I am going to put a bi-pod on it, because that is about all it is good for, I am not an operator of any kind. It is super accurate with Fed Match 168's, more then I can notice anyways.
Was it worth it? I think so, because I wanted one. In hindsight, I could have picked up an OBR for the money I have into it and be done.