They sell the "classic" true duals too for the newer bikes and then you don't have that "X" crossover on the right side and no issues checking the oil.
I picked up my RGC a week ago Saturday and dealer had installed the Rhineheart Classis true duals with Rhineheart 4" mufflers. Sound awesome, waiting for 500 miles to really hear them rumble. And there is no problem on the right side. But...., the left side can be a problem for the rider's inner thigh as the pipe is very close. No problem riding but at a stop light you may bump your inner thigh on the hot pipe. The biggest problem is trying to back up the bike--you need to be REAL careful there to not burn your thigh.