For the record, I found out how to hide the tabs from view unless I hover over them ... just drag the bar to the right of them towards the left, until the descriptions disappear. Awesome--I'm never going back to horizontal tabs. Cheers, all.
Looks great in terms of streamlining the browser window. However, I'll wait to utilize until I can hide the tabs when I'm not using them. Bummer this option wasn't implemented from the start.