Have the right Comment pane be the default instead of the Tools pane

I'm cross posting this from my other post, found here. Since I don't think the Quick Tools bar can be customized in Reader XI, my main question is:

Can you change which "pane" is selected on the right side when Reader XI is launched?

I'm not 100% sure if pane is the right term, but when you open Reader XI, Tools, Sign, and Comment are shown on the right side. Later, if you open a PDF, Extended is also shown. Right now, Tools is always open when you open a PDF, or open Reader XI. If I can't customize the Quick Tools, at least I should be able to tell Reader which right-side pane to default to when Reader is opened, shouldn't I?

Again, searching the Preference Reference doesn't turn up anything definitive. A few entries looked slightly promising, bcommentPanelOnImportbeing one of them, but no matter the combination, Tools always defaults when Reader is opened.

So, to get more specific,

Can I have the Comment pane open by default when Reader XI is launched, as opposed to the Tools pane?

Thanks again in advance.