Google introduces Tasks to Gmail, no off-switch

When I logged on to me email this morning something new was waiting for me in my Gmail account. A brand spanking new "Tasks" button! Which would be great, except I don't like Google's task manager.

• It lacks synchronization features, hence not usable for my mobile
• It's fairly limited, feels like someone puked a bit of Javascript code on my tasklist
• It's not my tasklist of choice, I'd rather have RTM or Getting Things Gnome.

But why can't I turn this off? It used to be an optional labs feature, but now it's just in there. It looks extremely confusing when I add my RTM (Remember the Milk) gadget to Gmail and then I have two 'Tasks' gadgets.

I would like to be able to remove this, without any Greasemonkey magic, please.