How to Template Grid for Entries that Switch from Horizontal to Vertical? How do you template to output across a grid that switches between vertical and horizontal posts?  I left the Craft/Trig off. 

I know how to loop through and print entries using one orientation.  But how do I get it to change direction after every 2 and then switch back again, repeat...
{% if loop.index is divisible by(2) %}stuff{% else %}other-stuff{% endif %}