Actually, I'm from sort of the opposite camp, Nigel. I try to make my tracks and registrations DRIER at gigs than for recording...
Of course, sitting right next to a monitor or in front of the speakers will mask it out, but the fact is, at all but the deadest room gigs, the room ITSELF is the 'extra' reverb, and the further away from the speakers the audience sits, the more it factors into what they are hearing (and you are not!).
I hear an awful lot of acts that 'distance' themselves from the audience by providing a nice warm 'bath' of reverb for themselves to hear, not realizing that it is destroying any intimacy with the crowd, and reverb=distance. The more reverb, the further away you SOUND, even if you are only a few feet away.
If you need more reverb for a comfort level, buss more of it into your monitors, NOT the main mix... Your audience will usually make a better 'contact' with your music if it sounds up-front (but not loud!)...
JMO, yada yada yada...
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An arranger is just a tool. What matters is what you build with it..!