Wow. slicer-dicer. I'd hit exclusively to that forehand. His slice is very good. He prefers to lob off his backhand too. I'd hit forehands until I can rip one to his backhand and come to the net. I'm tired just watching this.
Yea, I would try to hit to the FH too. Come in and make him pass on FH too. The friend is a bit of an oddity because he has pretty good technique on the BH and serve but no topspin FH. Most players that learn to serve and slice the BH reasonably well have at least a reasonably topspin FH. Anyhow, good level of play from both players and looks like a fun match.