You are, of course, right about the neutrino.
The Feynman diagrams both had the proton bottom left and electron bottom right (sorry, don't know how to do diagrams!). The neutron moves out at top left and the neutrino out at top right - both processes (electron capture and electron-proton...
According to a textbook that I was looking at, electron capture and electron-proton collisions both produced a neutron and an antineutrino, but one was mediated by a W+ particle and the other by a W-. Is this correct, or are they interchangeable?