Ventrilo, on the other hand, does have a GTK-based Linux client called Mangler. I think I'll take it for a spin.
Heard about TeamTalk. Thought I'd try it. Site says no Linux client, but it's there. Problem is it's qt-based, so a11y is nonexistent.
Reporting bugs and registering blueprints in Linux Mint is as easy as in Ubuntu. I can even use the same Launchpad account. Very nice!