Aside from the frame design considerations, if he isn't already well settled into a track-specific position, then duplicating his road position in the drops isn't the worst thing he could do. If I were making the frame for him, and he doesn't have his specific track fit dialed, I'd start from there, and give some room for the position to rotate forward (about the BB -- so a little steeper in the STA, and some room to drop the bar position). Just my own experience/opinion.