I withdraw the question. It was an interesting discussion with partner, however, translating to precision what is a normal sequence in 2/1 or standard American.
Our exact context was this:
partner, who is a much more experienced precision player, pointed out that 3
♦ right away should be forcing, since in essence it is a new suit, and also thought this sequence was forcing. I thought it was consistent with the negative double sequence posted above, except that partner is known not to have 6
♣. Incidentally, I forgot that I should have slightly more values than in standard, so that I am either dead minimum or sub-minimum for the bid, as well as the wrong shape.
I think this hand will be an advertisement for us to use negative free bids after 2 level interference over our nebulous diamond opening, however. Those seem to work much better in a precision context.