>On the other hand, those bards would have no way of knowing
>you took the anti-Romantic edge unless they get an echo. They
>might just chalk it up to the RNG that their songs fail to
>work as often on you as they do on other people.

It's true!

And, really, if they're going after three people in a raid and only one of you has the edge... is switching really the better option? Even if you knew everything, maybe, maybe not.

>Additional question:
>
>Could one be simultaneously anti-Romantic, anti-Tragic,
>anti-Comedic and anti-Epic, or do those four make up a set
>from which a given character can only choose one?

You only get to pick one right now.

Note that you can be given edges that you can't pick, so I could conceivably see getting more than one as some kind of special award.