i dont use black shadow tooooo often, so i just use Milani Storm, which is a dupe for Black Tied. cheapo, decently pigmented, and does the job.
as for the matte vs the glitter question .... with black tied you can put in the effort to make the glitter stay on/stop fall out, or just slap it on and not all that much glitter stays on where you can tell much of a difference. on the flip side with the matte carbon, you can put it on by itself, and if you are craving some shimmer or glitter, just lightly go over it with something sheer with shimmer.