Fair enough, but...even the slowest of event staff would have to be aware that if someone is bringing gear in then they're gonna be carrying it in their pockets/on their person. I mean...short of concealing things...internally...there aren't really any other options.
Yes, you are right, I do believe that most people could make some pretty accurate basic assumptions about pockets being involved carrying and concealing gear. That having been said, it is probably fair to assume that the OP had concluded this as well. From that point, all details concerning the how-to's of stealth recording really should not, in my opinion and the opinion of many others, be discussed in public. Particularly since the OP specifically recognized that all pointers should be directed via-PM.
It is obvious that venue staff could assume that pockets are involved, but specifics about holes, microphone placement, dissemination of gear in various pockets, and the like is all information that, though it may be assumed by venue staff, there is absolutely no benefit in confirming in public. The absolute main point to all of this dissatifaction I feel with having this conversation publicly, is that the basic cost / benefit of having it in
private vs. having it in public is WAAY skewed in favor of private.... again, particularly considering that that is the medium suggested by the OP!
I just don't see any advantage whatsoever to talking about this stuff publicly, even if a lot of it "assumable."