Those look rather cheap.

I've narrowed it down between 2 options.
1. Arkel Bug - all-in-one plenty of room for my laptop and accessories and I can use my current grocery-style bag for the lighter stuff and binders. Downside is the ridiculous price of $150 including tax and shipping.
2. Ortlieb Back Roller Classic with Carrying System for Panniers - I get 2 panniers for what is essentially the price of one Bug. And they match as well as allow me to use them as regular touring panniers. The $40 I'll spend on the carrier will allow me to use one as a backpack and one as a hand-held bag as I go from class to class. Downside is the carrying attachment is external and will take up space but having 2 large panniers instead of just one makes up for it?

I'm really leaning towards the Ortlieb due to money for the space but the back-pack design of the Bug looks better and more comfortable.
As mentioned on the earlier review of the carrrier http://www.bikeforums.net/showthread...light=backpack the author notes they felt clumsy.

Should I just go ahead, suck it up, and buy one actual back-pack pannier to avoid the hassle of attachments?

I'll be ordering one or the other Thursday. Please help!