Well, I was surprised to find this had replies after I'd basically finished this project.
Most of the questions were answered by the two posters; and they were right. My demarc is basically the ONT; as I'm no longer on copper at all. The "red-button crimps" are the ones like the phone company uses. I guess Scotch-Locks are what they're called, I always called them "red button" since I deal with people who need a physical description when I do it. I think mine are made by 3M...a buddy of mine who does network/telephone gave me a few thousand of them.
That's what it looks like now instead of running through the old copper NID as the installer did; which as said earlier...was mostly for accessability. The box they're running in is the enclosure a cable company installed over 20 years ago. I haven't had cable in over 14 years and they never took it off the house (and has changed hands twice since), so I'm making use of it.
You can't see the white cat5 that's carrying the phone out of the fios box...but you might be able to see a hint of where it went in to the NID. I was here when the installer hooked it up; he merely just opened up the telco side, removed the original copper and put the new lines from the ONT in to it. Since the lines from the ONT are already designed to go directly to your phone...this was done just to save the installer a few seconds. It's actually a replacement; the original copper NID was brittle and I had a few internal mods I made after I cleaned up the copper and the screw terminals broke (it was that old).
The new one wasn't hanging on by but two threads of a screw...and the original copper had been sliced when the fiber was buried...so I took it off to clean it up a bit.