Well, this was a funny little in-betweenie, but I admit that this is a good starting point for more and I hope there is more to come.
As someone whos is blind I can say that indeed I don't need a cane in places I'm well-conected with, and I never use one in my flat or the house I live in, but most of the time I take it with me on the street in in open buildings like the school because you never know which crazy ideas to put something in youw way another one of this seeing people just had. :-)
And it's true that Clark/Superman's voice in the show is totally recognizable - As for me, as I don't can see him, I always wonder how persons didn't recognize him when he speaks to them as Clark and 10 seconds later as Superman...