I really like shooting black and white, always have ever since my first foray into shooting while working in London. Is there room for a dedicated black & white digital camera? I have shot with the Monochrome and the files are fantastic, the only issue is its based on the M9. I have also shot extensively on Fuji and Sony cameras processing the files through Silver Effex and the results are good but they are no where near the Monochrom.
Do we need one? No. Do we want one? Possibly. Do we want one enough for a mainstream brand to produce one? Probably not.
Here is a quick video on the Leica Monochrom-
I tell you what, if you could make a mono X-100T I would buy one!