Comment 15 for bug 949949

I'm not that deep into KDE but the original author wrote:
"I don't have the ability of some other KDE developers to have clones, and I'm not crazy enough to try to mix Gtk and Qt in one process (which, despite the possibility of a shared event loop, should be nowhere near trivial)."
http://www.kdedevelopers.org/node/4099

It's might be possible but I don't see anyone investing that much effort.