The discussion was a private one among a group of about twenty, most of them Lib Dem members based in Brussels, and concentrated entirely on policy; the leadership campaign was barely mentioned. I was impressed despite myself. As various friends who are more involved than I am have reported, Lamb is clearly cerebral and reflective, and wants to get the best information available from many different sources. He did not pitch us; he asked for our views (which I gave at some length, though he was nice about it afterwards).
So I ended the meeting reassured on substance at least, if Lamb rather than Farron is elected on Wednesday. However, my prejudice on style was reinforced: Farron speaks from the heart, Lamb from the head. At this point, I think the party needs passion as well as reflection. If the party ends up with Farron as leader and Lamb as spokesman on EU policy, there may be some hope of that. So I dropped my vote unchanged into the postbox on Rue de Treves as I walked back to my office.