Same name different realm.. ok or not?

[MiRai]

So, to the question... Is it ok to have more than one WoW character with the same name (different realms) while multiboxing?

Yes, it's fine, since characters are identified by their realm. If you're going to be using ISBoxer like you say, then there's a realm field for you to fill out.

Are there ANY reasons why this is a bad idea? Aside from me just getting confused.
I'm open to any reasons why it might not be good.. software, macros, PvE, PvP, farming, gathering, mailing, etc.

I guess there's the potential problem where you won't be able to trade anything between those characters unless they share a connected realm, but, no, other than perhaps some edge case situations where you're hard-coding namelists into add-ons, which could probably be fixed anyway if you knew Lua well enough.