I guess there were several reasons I never tried them. I considered it at one point, but my OTR service wasn't that bad at the time. Sure they had that bit of a debacle with AT&T shutting that part down, but they did try pretty hard to rectify the situation, at least from my point of view.
Then service from T-Mobile started getting worse and worse, and prompted me to start looking around again. I had contacted Visible before, and no one with Visible indicated that using their service would work as I was wanting to do it. I know, it was probably just a bunch of smoke because they didn't really know and to protect themselves, but it just threw some doubt in my mind. Plus, I couldn't get a definitive answer here or otherwise how to get it to work. Plus I kind of wanted to stick with a service similar to OTR where I might at least have some support to fall back on if something went south in the service, as happened before.
Then, with my experience with WiFi Mate, that rationale didn't seem to hold water. They used Visible for service, but something went wrong with it, and I just wasn't sure if it wasn't a problem with WiFi Mate or if Visible was the culprit there. So there was that seed in my mind about which one was flaky. Plus, IIRC Visible's service was 40 bucks a month unless you had more than one line, which would not be what I needed. So I saw online where others were using Page Plus with no problems, and decided to give it a shot. So far I have no complaints with it. It all may be a moot point for me in the near future hopefully anyway, as it looks like we may be getting fiber service from CEO soon. Fingers crossed.