Anyone with Mackie Onyx 820i with OSX?

[purplesnet]

Howdy,

does anyone have experience using Mackie's Onyx 820i FW mixer with Live on OSX?
It would fill my need of getting a mixer plus being an audio interface, but I wonder
what kind of latency you get from it when using VI plugins or amp sims. What does Live
say about overall latency, and does it work with small buffer when loaded?

[rocnuts]

I'm also considering the same set up. Latency would ruin everything. I've seen on other reviews that latency is a problem with the onyx series. Does anyone have experience with the onyx 820i and tracking to ableton?