I went into this expecting a rhythm guitarist, and it exceeded my expectations. True you really can't play individual strings with it, and it may be somewhat limited sonically. However, a rhythm guitarist is never supposed to stand out in a mix, and all that I am using it for is to add an organic quality to my mostly electronic sounding music. A great use for this plug is to quickly figure out chord progressions for a song and get it arranged very quickly, then add the "real" music to the arrangement.
About the plug it self. The sound is for the most part(especially on the acoustic) superb. Some of the electrics didn't impress me much, but I am not really all that into heavy distorted guitars anyway.
One note- you need more than 256MB of RAM to run a few instances of this plug in. I had to upgrade to 768 to comfortably run this plugin. I noticed problems with FL crashing when I ran out of memory and the swap file was being used. this will take 1.6GB of hd space too.
In FL 3.56, I have seen some crashes and hiccupps, but it is pretty stable for the most part. This mainly happens when I save an flp in FL or when I use all my memory.
As with all Steinberg plugins, the value for the money isn't its biggest selling point, and it is kind of expensive at 200 dollars, I don't think that any VSTi should be more than 100-150 for even the most complex plugin, but If you think of it in terms of getting a VST plus 1.6 Gb of samples its not too bad.
Anyway,if you aren't expecting all of your guitar needs packaged in a box, and just want a rhythm guitarist to strum along with your compositions, you will be happy with this plug.