There are have been some guides to try to bypass the router and go strait to the OTN but it is extremely non trivial.
I hear it's a challenge to avoid the standard Verizon router if you also have TV or phone service through Fios.
I also confirmed this a while back on some forums but perhaps they have changed this. It is good to hear you had success. Do you have a residential or biz plan?
Edit:
Here is the link (I was mistaken and thought it was on a forum): http://theassociatespress.com/bypass-fios-router-entirely/
Like I said before it is pretty non trivial and you have to plead your case to them to let it happen.
My own household used its own router with the Verizon router configured as a MoCA bridge almost exclusively from 2006 until 2015 when we cancelled FiOS TV in favor of an OTA TV antenna. There were a few brief periods of time where I tried having Verizon's router be the gateway router, but it turned out to be awful.
Expect to hear the CSR make vague references to advanced features being absent when saying that you want to use your own router over their advice to rent theirs. The only "advanced feature" that would be absent is Verizon's remote management backdoor.
Usually, you don't even want to remove the PoS router you get from your ISP from it's box. In my experience no ISP ever gives away decent equipment, it's just the cheapest thing they could order in quantity.
Another issue with an ISP-issued router is that you have no idea what they did and can do with it. I know of several ISP's that have full remote access to the routers they hand out. Basically, you risk exposing your entire home network.