Well the guy I know is certainly not expecting a vacancy at a particular base (but then again he may have done his type rating a bit more than a year ago)... As a matter of fact he is waiting for a job, any job hence why he is in touch with me.
But I agree though, don't take my word for it as I have no personal experience with BAC Express other than than through this guy.
And if you are ineterested in the 360 type then I, too, recommend you to call and find out by yourself in order to get "a feel for it".
Asking questions on pprune is perfectly legitimate and should allow you to obtain more than one perspective.
It may also help triggering a few points you would like to raise during you telephone converstation with the outfit.
Good Luck !