Following up on myself here for a moment, I assume that you can actually use a CCM V on its side, rather than vertically. Or does that mess with its pattern too much? If so, the end-addressed CCM 41s would, indeed, be easier for my purposes.
I think that getting the spacing and angle right might be more of a problem than messing with the pattern (although not really an issue, if my mental image is at all close, your head will block the rear lobes)...
Well, I'm imagining having them at the front of the hat, so pretty much in a straight line, on their sides, pointing at each other.
This being my first experience of mics like these, I'm just not sure what happens to the pattern when you turn the mic through 90 degrees. Obviously, these are intended to be vertically mounted on a bar, and I'll be tipping them on their side. Your suspicion that the pattern won't be too negatively influenced is encouraging, but I'll feel better when more people weigh in to say the same.
But yeah, getting the angle right will be tricky, too; and learning the discipline to keep my head still. I don't currently hat-mount, so I'm free to move my head with no ill effects.
I don't imagine that the spacing will matter much, because I'm not going for much of a stereo image. I stack-tape, so any notion of stereo is pretty much out the window.
It's also worth considering trying to get some open permissions. With the amount of cash you've already spent, the extra money for stand/bar/clips will be a drop in the bucket. HMH is probably difficult, but some of the other venues might be fairly easy. Melkweg, for example, allows open taping at the Jam in the Dam, so they are aware of taping and at least somewhat open to it. I would guess that if you had the artist's approval, they would let you run a stand there...
I probably should start moving in that direction for some of the recordings, I make, yes.