My rims are single wall.. If You use stock  (double wall) with v brakes and side wall holes=no problem  It depends on how you use your bike ..natural or street , your riding style  
Cheers 
 
 
  
Yes ..Right ! Doing my modifiacations I am saved about 400- 500 grams. Before painting I made some modifications for frame to...So...modifications - 50 g, paint + 50 = 0  
I know that I can remove paint from my frame and save 50 g, but I love this color..