Going to try out this pannier malarky for the commute to work. I'll have the usual tube, minitool and levers to carry in the pannier too and rather not get them rolling around in the bag and damaging/getting me clothes dirty. They'll be in there through thick and thin so a little bit of water protection from rust etc. wouldn't got amiss either.
Any good suggestions for a little dry-bag for them to live? Would the bag survive with some potentially pointy things in it like allen keys?