I said 50/50. I think I intend to shoot more BW than colour but that logistics often defeat me. I'd like to shoot real BW but don't develop my own (I know, I should change that) and am usually too impatient to have it sent out. So, I mostly shoot BW400CN, which is acceptable even if it isn't Delta 400. But I've only found one minilab which reliably processes that without nasty colour-casts, so I tend to use them - which builds in delays as I can't often get to them. With others I find it easier to get a good result doing my own BW conversion from lab scans of colour negs. (I'm trying to avoid the time taken doing my own scans, but often find I need to scan my own negs from colour-cast C-41 BW.)
Also, Fuji makes decent ISO 800 and 1600 colour film. And, finally, its often handy to have colour loaded if I only have one camera with me. For those shots that need colour, its there. And for those better in BW, well, I just convert the scans. Again, probably not quite as good as even C-41 BW but more convenient.
...Mike