Not quite sure if it is possible or not to filter out names... but if I remember correctly, SBF has a profile feature.
Why not create a different profile for each one of your characters?
I think I misunderstood your question the first time i read it.
If I remember right, you can use add "my" in the filter and it'll filter out everything except your spells. Can't remember for sure, and I'm currently downloading 3.3 so can't check.