I use it for two years for work, in addition to the ARES BB.
Its big advantage is its size and weight. It has good preamps (it's a nagra ..). It has all the necessary inputs and outputs, but you have the cable with a breakout, which is not very practical, unless you have many connections as needed (two in stereo mic or two lines out, etc. .. )
It is very expensive. too expensive. But we are not disappointed with the quality. Nagra is always expensive.
But shooting field recording with a stereo pair and this machine is a joy.