We have on of the best PG's in the nation averaging 7.5 assists per game last year. I think they will share the ball just fine.
The sharing the ball doesn't end with the point guard. Any good half-court offense is dependant on quick passing and ball reversal. It creates passing lanes and leaves defenders out of good defensive position to handle dump ins. Even if you have a good PG the offense will still stagnate if the other four guys on the court look to score first instead of running the offense. One guy passing the ball doesn't represent sharing the ball.