The Zoom SSH-6's big selling point is it's dual functionality.
The combination of shotgun mic and stereo "field" style mic is very handy, but it is difficult to maintain a good mix between the two input sources eh. The option to record in "MS Raw" mode is a life saver for this - it is possible to mix the amount of stereo mic compared to shotgun later in post production. The VST plugin to enable this function is downloadable from the Zoom website - perhaps this could be clearer.
I had to update the 1.1 firmware on my Zoom H6 to current version 2.0 to use this microphone.
The shotgun mic pickup pattern is perhaps a little wide compared to other popular shotgun mics, but for me its practicality vastly outweighs this. It's a great multi purpose mic with an excellent slimline design.