It's a fun shot.
I've found if the interferring ball is far enough from the pocket (1-2 diamonds away from the pocket-for a landing zone for the OB), especially in-line to the full corner pocket opening, and if you are jumping say less than 1/2 inch of interfering ball, and if everything is lined up straight to the pocket-and the CB is about a diamond from the OB and the OB a similar distance from the blocking ball -and if you are in the 'gotta go' mood- it can be the right shot (as in the aforementioned ring game).
For me- if it sits off angle (not fairly straight) a lot of bad things can happen-including a rude introduction to those big-uns on the next table, who do not appreciate being wacked with a flying CB. Go figure.
If there's nothing else-I'll shoot it.
One of my favorite wacky shots.
Oh yeah-watch out for the scratch