It isn't recommended to be wandering around inside a moving Motor Home, but it's forbidden to be inside a moving trailer. As a result, MoHo door locks are different and of course therefore more expensive, than those for Trailers. Look at the Amazon page you linked, and you'll see where the MoHo locks don't have just a latch and a plain striker plate. They have extra pieces that engage a more elaborate plate. That's because for a MoHo they have to meet Federal Motor Vehicle Safety Standards/FMVSS to resist uncommanded opening.
So please shop accordingly, people have fallen out of moving RV's through that door.
