I'm on my 3rd RDL (3 different bikes) thousands of miles & never had any issues. I my mind, a RDL is the best money you can spend on your bike.
My G/F & I were headed home from Leesburg bike fest. She was on her HD & I was on my Suzuki V-Strom, she was around 65-66yo I was around 69-70yo . It was a 9 hour ride on secondary roads. 2 hours out, the sky opened up & we were in pouring rain for 7 hours. I got off my bike, without a single ache or pain. My butt was smiling. I've had a bum back since a 1981 accident, if it had been any other seat I would have had to take the next day off from work..…….
A Iron Butt, buddy rode his V-Strom from Key West Fl. to the southern most tip of South America & back on a RDL. He swears he could not have done it on any other seat and would not have tried it.