Depending what defense you play, SB on guards can definitely be useful.
Because of the fact that most of BB plays look inside, I think many people have been experimenting with the best way to defend it.
In a look inside offense, guards take a lot of the driving shots. If you play a 2-3 then SF, PF but mostly C shotblocking will defend those shots. If you play a 3-2, PF and C shotblocking will mostly defend. However, if you play man2man like I do, the PG and SG will defend most of those drives. In my experience, a center with 12 SB won't help much against driving guards in man2man.
I have a guard with 7 shotblocking and I notice that he defends LI rather well and can accumulate some blocks from time to time.
Good luck training Ogle. He should prove to be a beast when you are done with him.