I don't think that I'll have a problem with my heels hitting the panniers. Last weekend I put my panniers on my trek 1000 which has 41.7cm chainstays. With the panniers all the way forward my heel just grazed the bags but I was able to slide them back a little and had no problem. I suspect that I wouldn't have a problem with the poprad an its 43cm chainstays. One thing that bothers me about the poprad is that it doesn't have eyelets at the top of the seatstays to attach a rack. I'd have to use some clamps or rig up something to attach to the seatstay bridge.

I like the orange too.