By popular demand (well, a couple of people asked for it), I’ve just released a 2-column version of Upstart Blogger Modicus.
This version adds an Options tab to your WordPress admin which allows you to configure several theme settings without having to dip into the code.
I’m releasing this version on the same page as the original Modicus theme because they should really be one theme. Someday, maybe. In the meantime, grab Modicus 2c from the WordPress Theme: Upstart Blogger Modicus page.