Yeah I get that on the top tube, but not on the downtube?It's because you can't strap a load of frame and top tube bags on if there is gear cable running along too
And also to allow easier "porterage" when you realise you should be riding a bike with suspension
 
 
		 
 
		 
 
		 
 
		 
	 
	 
 
		 
 
 
		 
 
 
		 
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		