This team's championship formula has always include a stopper, Bowen, in the lineup, even if it almost meant playing 4-on-5 offensively.
So, while Bogans might not be Bowen, the Spurs also didn't have an offensive player like Jefferson playing alongside Tim and Tony in the starting-5, while keeping Manu on the bench. Bogans is obviously a downgrade from Bowen but RJ's a big enough upgrade over Fin on both ends that it should be doable; I'm not sure they've got a better option currently.
I still have no clue why they haven't given Hairston a shot, given how well he played and the early stage of the season, but at least Bogans is a step in the right direction and a player that resembles Bowen on both ends; hopefully those spot-up 3's will start falling as he builds confidence through playing time.
If they've got Bonner on the floor, their perimeter defense needs to be stout.
If they've got Finley and Jefferson on the perimeter together, their interior defense has to be stout.