Surprisingly it is hypothetically possible for someone, foolishly, to enter somewhat safely past the EH (Even Horizon). This is only true for supermassive black holes where the gravitational gradient is tolerable versus the gradient of a small black hole, which causes "spaghettification".
I'm not qualified to address the complicated relativistic effects but my guess is that the light from outside the EH would be too feeble to "see". One way to address how bright something appears is by counting the number of photons the eye sees in, say, one second. The faster you move away from an object the fewer photons per second one will receive, thus they appear dimmer. They are also redshifted. So at the speed one enters the EH, I think both of these factors will minimize any real observation of the outside. How spacetime alters their path and other relativistic effects will make this even more complicated, I suspect.