I find the hint of color in the sky kind of distracting, and I am not sure that it adds anything to the image.
Um, there IS a hint of reddish in the sky, right? I'm not just having a stroke?
I often notice similar faint color cast in my b&w conversions (which I do mostly in LR).
Could it be because we are still in the RGB mode, which then only attempts to stimulate a grayscale? You know, like when printing, we have also two options (at least with lesser printers): print using grayscale or using RGB.
Dunno, I'm not seeing this on my screen, but as several people obviously are, then I suppose it could be a whole host of factors, different calibration of monitors, the way LuLa uploads the file through different browsers, our different concepts and ability to see colour, the different lighting conditions we are viewing the screen under, even the different O/S's and screens we are using, as everything renders colour (including our eyes) slightly differently it seems.
All I did was add a slight but even sepia tint to the whole image in one hit - so could it perhaps be how the tone has mixed with the various light/white areas of the scene, you know washing out the colour in the lighter areas and intensifying it in the darker areas?
It would be a simple thing to desaturate the image and post a second version, which I will do later today.