Size is hard to quantify - it should absolutely apply the same as street shoes - but how many times are you walking solidly for 4-5 hours (i.e. a long bike ride). But that said I don't think you need to size up necessarily, just be aware that you may need to adjust as you go
Germany. I might be interested though :)
How important is it to buy shoes a bit bigger than I usually wear? I've read that feet swell but doesn't that apply to regular street shoes, too?