I have been watching the OIA this year and have seen quite alot of Box in 1's this year. With alot of great "guards", and not alot of great post players, I believe this is the reason why alot of coaches have gone back to using the box in 1 in the OIA...
I agree, these defenses are not a base defense, but it sure is a good change up defense to play a chess game with the opposing coach.
I saw a game last year when the triangle and 2 (a version of it...) was used against a skilled post player in the OIA white...It proved effective to take the ball away from the post player, but that team still lost because the guards on the perimeter got open looks the whole game...
You gotta practice these defenses, and have the right personel to execute it in my opinion...And of course, if you don't have to use, then don't...