Actually you will see it coming. Gravity waves can’t travel faster than light either.
It was my understanding (granted, very limited) that gravity was not bound by time or space.
I've actually read some theory...maybe pop theory since I'm not trained on the subject...that once something has passed the event horizon of a black hole that there is no time, or time stands still.
Certainly nothing come out once in.
It stands to reason that as a black hole gets bigger and bigger that the event horizon will expand in some proportion to the hole itself.
Wouldn't that mean that we couldn't see it until it hit us?