Yeah, it's honestly not that good. I think Metheny uses an Axon. Even with those you need to be very careful with your phrasing, you can't be too fast, you lose a lot of dynamic range and a lot of expressivity, sometimes notes just die, the latency is high...

Here's what Metheny said himself: "But the guitar‑to‑MIDI part has always been a problem. It's a question of physics. On input, I sort of have to rush. But I know how to rush. I play ahead."

It's fun for lots of things, and you can make lots of cool music, but it's still very limited to certain styles, dynamic ranges, phrasing, tempo, speeds...