[Nuggie]

I had a necro and druid bound at firepots on Blue. I can say it greatly hindered by druid and made things better for my necro.

I had access to a firepot bound cleric, which was extremely helpful as a ress-bot for the guild but would hinder CR'ing in grouping efforts in dungeons like you said. Firepot bound porters are good for guild-bots for the quick access to halas and to a lesser extent other starting cities.

In kunark any class that can't invis themselves after death aren't gaining much, since they cant go through Cab without help or extraneous effort with faction. Most binding classes are generally better off binding where they are exping/farming.

That said, I'm binding my cleric at firepots, but leaving my Mage able to bind at dungeons.