Alrighty... I've had my 10th session with 417s, and like I kinda anticipated, they dont work that well for me.
It simply does not fit my feet from ankle to mid-foot, as my ankle and midfoot is rather at best a medium width.
Durability seems to be ace, like all NB's ive had. Trying to get some 508s, or maybe try 574s, which seem to be narrow?