auto winder would be for those manual winding watches. if im not mistaken. so for seiko's autos normally, no wrist time, no winding at all 

thats nice man. but i dont seem to like much of the seiko chronographs tho. not sure why. haha.

i don't think u can remove those marks.. its permanent

Huh? So we need to wear an oris to look at a seiko? Then a rolex to look at an oris?

Anyway, i reckon shops with better trained sales people wouldnt behave in that way. Last time I was in watatime lookign at watches.... the salesgirl was very helpful despite me wearing a timex on that day (goign to gym later ma).

It's due to quartz and silica particles that are trapped in the nato strap after a while from airborne dust.  Those particles are hard enough to scratch metal casings and mineral crystals. Clean the strap daily, use 2 piece straps or use metal bracelets for outdoor use.
Personally, I prefer metal bracelets because I like to wash my watch with soap and rinse under running water at least once or twice daily to keep it clean and prevent dirt and grime buildup.