Your conversion to B&W is very nice. I started re-liking B&W images when I got my GRD II but have not done any B&W with my DP1. After seeing your work here, I must give it a try. I like the less "grain" type of B&W images and perhaps the DP1 may be too "clean" for some. Of course some "grain" can always be added in PP.
Gil