Have you looked at Tailor Store's MTM chinos? I have a couple of pairs and aside from some minor issues to be expected with getting MTM right they're pretty good. Certainly fit a lot better than any OTR ones I've tried. And if I recall only about $60 or so.
I think that was my exact outfit at the Kimber launch :-) So, obviously, I agree. With the right pieces I believe it works, to me it's about the level of formality being consistent more than anything else.
I might be able to make it after all now, may see you guys there.Also, apparently business casual to some people now means removing the tie and jacket of your ill-fitting suit and adorning the remains with a hoody. This on a 60+ bloke on the tram.