Pooks, did you find your bungee-net? If not, they sell them at motorcycle shops, so if you still want one, go there.

I have these really old and teeny panniers (Nashbar brand) on my mtb that I don't ride anymore. Well, teeny by pannier standards, and purple to boot . I love them, but I don't think they really "go" with the new Bianchi, so I don't know what my plan is yet for carrying stuff on it.