Well, technically I bought it a few days ago but I had to wait for my new ilok (never had one before) to get here...
I only have a little while playing with it on a project where I recorded 3 songs for a indie rock band and pseudo mastered it here as they didn't have the money for a real mastering house to do it. So I opened up my mastering project, pull my compressor and limiter off of 1 of the 3 songs leaving just an Eq and a stereo plug to widen things a bit. I then added the FG-X limiter rack. For some reason the presets are not there so I started from scratch (which is probably a good thing anyway).
I ended up using the compressor on it for about .75 db of GR and then dialed up the limiter gain to add about 12db putting my RMS in the loud passages at about -8.5 db, peaks up to -.01 and played around this the settings while having the constant gain monitoring on. When I turn that feature off this thing sounds like my nice dynamic mix with the volume jacked. I can't hear ANY squashing, limiting, at all!? My snare and kick transients are all still there and it's so damn clean that I kinda missed some of the edge you get by pushing a limiter a little... Is that insane? I found myself like wow.... it's too clean! I have to find a way to F this up a little. When I compared that song to the other 2 (with my mastering prior to this plug) it sounds cleaner, more open and dynamic and just as loud to my ear at this point anyway.
Crazy cool new tool to play with. I am sure I will update this as I get more experience with it. I'd love to hear your thoughts if you have spent some time with this one.