Laptop carrying case

I need to get a nice carrying case for my T40 for my trip to GUADEC. Since I move around with my bike a lot, I’d prefer a backpack to the more “traditional” models. There’s only one backpack model offered from our internal marketplace (vs. several normal laptop cases) — I was wondering if anyone has had any experience with Targus Campus Notebook Backpac (TEB05)? Is it any good?