No problem with replicas from me, I used to be against the idea, but I joined a band recently, wherein the singer/rhythm guitarist has a replica "gibson" flying V, and a replica "gibson" Les Paul. He's upgraded to seymour duncan pickups in both.
I played the Paul before and after the pickup change. Before it sounded tinny, flat, dull, and had a major feedback problem. With the Duncans thrown in, it sounds A-OK. And this is in the same room as a real Gibson Les Paul, and my Epiphone Les Paul with BKP's.
I haven't played the V (which he won in a £1 raffle by the way! lucky bas....) yet, but he threw Duncans in that before I met him, and it sounds great through a stack.