Just an idea.
Add this to your layout
<action method="addLink"><label>My Quotes</label><path>qquoteadv/index</path><title>My Quotes</title></action>
That way you can add the ability to see quotes in the top.links space and don't have to rely on the Checkout if you have turned it off. You can even use an ifconfig and use it with a setting to hide and show if they have disabled the checkout completely.