My purpose personally was to use it for specific order details. If there was a specific comment about the order, shipping arrangement, payment detail, gift maybe, multiple variety that may not fit E-Junkies variant option. Those type of things is what I would ultimately use it for.
It may also come into play for other things like requesting catalogs along with an order, or maybe something on those lines.
Mainly I thought it would be a simple yet neat feature to add on the checkout. You are also correct, I misinformed you in which page I thought it should be on. In my mind I imagined it on the "Checkout" page, or the page when you click on "View Cart" and have your total and zip code on it.
Just thought it would be a neat feature :)
If you had any other questions for me I would be more then obliged to answer,
Thanks for your support!