Not sure where the IV would come in, but both the plaintext and the initial key seem to be taken directly from the input as the first two blocks in any "compression group". Let's say you want intermediate key X after the first two steps, the first 3 blocks should be something like m_2 = D(X, E(m_1, m_0)) because we're missing the xor step from davies-meyer.

Let me know if I'm wrong though, strictly an amateur here.