Harder to read and (as I recall) +/- 1 stop resolution instead of the 'traffic lights' approach used in Leicas, the ZI SW and many Voigtländers, which can offer +/- 1/3 stop or +/- 1/2 stop, depending on how they are designed.
I gave it back a long time ago (I had it for review when it came out) so I may be misremembering. My wife remembers the same, though, and on re-reading the instruction book (which I kept) I see no indications to the contrary.
Cheers,
R.