I'm not enthusiastic that this will take off into something.
A .30 SC is .312" in diameter (7.925 mm), weighing in at 100 gr. That's smaller than a 9mm in diameter and significantly lighter.
And before we get into velocity and energy, all that is going realistically buy you is hole punching ability, as it's essentially on par with a 9mm.
Well, I suppose an increased capacity, given that the OAL is equivalent to a 9mm while being smaller in diameter.
But there's more to a bullet's performance than punching a hole, though that's arguably a very important one. Mass is important too, for reasons that can't be made up simply by velocity.
Also, consider that you can only get so much performance out of a pistol round because "physics". And practicality. Dropping bullet diameter and mass down requires other changes which only begin to make up for the differences in performance...and won't equal many, regardless of what you do.
I don't see what benefits the .30 SC gives that is really any better than what's already available out there in the market. And what benefits it does provide are marginal at best.
That said...I say "have at it" to anybody who wants something in .30 SC. Shooting is fun, whatever it is.