For the past two years, I went as Gendo at Anime Central. People loved the costume, obviously...
...on top of that, it kind of helps growing a beard that isn't too thin or too thick, which is a big problem I see with most Gendo costumes....
Anyways, it was fun to do it, but the best part about is when I found others that went as other characters from Evangelion...
(including a Shinji that did very good impressions of the Governator. I decided to call him Irony for the rest of the night).
Pretty much, as soon as you get with a group like that, the photoshoots commence in a matter of 3...2... *first picture is taken already*
My point? Don't knock it till you tried it. Cosplaying at a convention is like drinking at a bar; Don't be surprised if you see it, and don't make a fuss if you do. I'll be honest when I say that many of the people I've seen aren't fit for certain costumes, but I don't bother complaining about it most of the time because I know I'll see a good version of said character right around the corner.
(Next year: Zangoose Gijinka)