I've never been on it... but by everything I've ever read about it, you DO NOT wanna take your RV on it.
This is a road that even off-road vehicles have trouble on. All of my reading was about guys on dual-sport and dirt bikes riding... breaking wheels, riding in deep rut-tracks, etc. It was one of the rides I'd hoped to make one day back when I had my BMW R1200GS.
2013 VOLTAGE 3200 (EPIC I & II)
2014 Ford F-450 PLATINUM