I..... don't know about that. I use tip cleaners all the time for what they are designed for, and they are not very... how do I put it... . "Robust". I don't know the metallurgy of injector tips but I would imagine they are a bit more hard than Copper. (Torch tip) Plus this method would lend itself to "Feel" rather than actual measurable sizing.
I guess if you were very careful you could clean a disassembled injector with a tip cleaner but I don't think I would try it on sticks that I'm counting on.
But then again, I could be wrong. Lets see what others have to say.