Here are my 4070s on their maiden voyage yesterday. Other than the soles which are a bit stiff (expected), the boots are supremely comfortable.
Last night I did notice that the tongue on each boot had some interesting markings. They looked similar to this picture (not mine), albeit maybe not as bad:
Have any of you experienced something similar? I feel like this is a result of the laces rubbing the tongue or leather rubbing against leather.