Oliver (who's comming to the meeting with the same probability as you are :) is preparing an installer for Mac, but his last notification was: "I have put it aside for a while since the tools for packaging are buggy."
Well, now that this Mac installer project of mine has been made semi- official let's put it this way: I've already assembled a working ConTeXt package based on the minimals that installs via the Apple installer. In other words, it will provide the same seamless installation experience to the user as known from the MacTeX package and, in fact, as known from any decent Mac software. However, a few minor issues still need to be sorted out before an initial version can be released to the public. For this reason (and in order to avoid clumsy workarounds) I'm currently waiting for an update of the relevant Apple developer tools which will most probably appear next week. That's actually pretty soon. Oliver