I don't have a problem with the calf ridge, but I do notice it sometimes.
I know we have a TON of threads on the issue, but I realized something last night while relaxing in my WBBB. If I point my toes and stretch out [mainly] my right foot, the material seems to stretch and the ridge is completely nonexistent! So I'm wondering, is this only noticable for people under 6' or so? I'm 5'9".