Santa Clarita is part of the greater Los Angeles area, so it's not likely to show up on that site as Verizon claims coverage in LA. Kind of crazy, I had LTE even when I went into the deep woods of a Portland suburb in Oregon. AT&T didn't even have 3G there. But LTE in Santa Clarita, pop 175,000? Nope.
We did not test the speed but the internet speeds did seem better. If I ever see LTE show up in Santa Clarita again, I will do a speed test, along with a screen shot with my on the map location. I am hoping this was a test and a deployment will come soon. I now know the towers must support LTE.