My partners don't usually open clubs when they hold diamonds, so it looks to me like they have escaped successfully, and I now have no good bid. All normal bids are misleading (major suits are weak and no diamond stop). I would rather risk the slight (well, I do have TWO aces) overbid of 3♦. At least we will end up in the right strain.
To me, this auction is not an analogy to the negative double. I invited partner to take a bite out of 2♦, and she did not do so. Hence, I can't double except for penalties, lest our "system" make it nearly always impossible to penalize the opponents.

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