Don Bobbio:
It won't flare. You don't get "flare armed" in single channel. Only in dual channel you will get it. In single channel it will just follow the glideslope untill it meets the concrete with existing vertical speed.
Are you basing at on the fact that you don't get a FLARE ARMED, etc? That's true, of course, but as the instructors explained the flare logic is still in the approach mode, annunciated or no.
I have no first-hand knowledge since when I'm in the sim I'm not testing A/P modes, but that's what they told me.