Hey RVM - I'm going to try them on mine! Just scored an NS Heritage myself. I own Ever's, and have ridden them on a Jones Mountain Twin, a Rossi Angus, a Rossi One Mag, and a Ride Concept TMS. They're light, easy on and off, and are super easy to set up. Never had a failure, but have replaced the ladders each season. IMO, there a nice compromise between the traditional and the step\slide ins.
All that said, I've never had them on a rocker hybrid. If you're not in a hurry, I'll report back come snow season.
"I didn't do it, and nobody saw me."