I got the basic guide boot. Spent way more than I want to do again. Only had it since spring and haven't been fishing real heavy this summer, so I can't speak to longevity. Other than to say, that after only a half dozen or so outings, the rubber tread is already showing signs of flattening out. If it continues at that pace they won't be long lasting boots, but I expect it to slow some as you get down to the thicker part of the cleats.
That's been my experience on hiking boots with vibram as well. Good grippy stuff. Wears out quicker than most by flattening. It's soft rubber.
I do have the star cleat, aluminum studs. So far they suck, they're not really spikes, but more like flat panels. On flat rock they're downright dangerous, like skates, because they keep the rubber from making contact. They do fine in broken, smaller rock bottoms and on land. I've been told that once you get some wear on them they improve, so that's why they're still on.
As far as grippiness of the rubber: It doesn't match felt, especially on big wet rocks like where I normally fish. But it's not bad overall, just different. I slip where I wouldn't normally expect to slip, and grip where I wouldn't normally expect to grip. Have to re-adjust my mind, I guess.