For those of you using panniers, can I ask how big they are (10l, 20L and bursting most of the time etc), how long your chainstays are and if you find heel clearance an issue? (I guess not otherwise you wouldn’t use them, but how much room you have is of interest)

It’s for a frame (commercial interest declared!) where I’m trying to balance a mix of uses and I don’t want to rule out rear panniers with enough kit for a tour – not word touring, more a week or so’s holiday. 450mm+ means most bags and feet are accommodated but that’s longer than I’d go, ideally.

Thanks.