I use a mod called Group Buttons that uses the /gb command. I saw a reference in the Guild Bank thread to using that same calling convention. Is renaming the /gb command possible and/or necessary in the Guild Bank mod prior to use to avoid a conflict with Group Buttons? Can I just do a global edit changing gb to gbk and GB to GBK in the lua file?

Well, the gb function for Guildbank doesn't really do anything at this point, except throw an error

I was going to add just a simple debugging function to it, but in light of this, I'll probably make the slash command for guildbank be /gbk as per your suggestion