Combined? Yes. Two separate viewable at the same time? Yes, but with provisions for those that don't use two way players. I may be overthinking it, but it's better to discuss the implementation before hand rather than after.
Are you thinking that designating them would be the trigger to create the second scouting report? IE a player that is not designated as two way would not have or show two reports? Good idea if it works this way, and there are two ways to display the scouting page so it doesn't leave blank box on the scouting page for players that are not two way.
If the game decides it needs to create the double report for any player that has the skills to be two way then make that an option one can turn off. Why? My game already creates a lot of pitchers that could also play another position and hit, but I don't want or use two way players, nor do I trust the AI to do so properly. More important I think the game creates too many and there haven't been enough legit two way players for me to justify using them, YMMV. I understand the need and fully support two ways being available for those that want them.
Right now I ignore their hitting skills (some are VERY GOOD), and what they could be, when I look open their "Ratings" page. I don't want to have to ignore a second scouting report.
Different strokes for different folks.