You probably have the Adventure Rains that are plastic and don't breath. With the Goretex I have not had that problem, they seem to breath pretty well.
What I like about the Sidi Adventure boots is the walkability. My offroad exploits are pretty tame. If I wanted more protection I'd probably go with the Sidi Discovery.
To the OP, here's my take on the Rain: Sidi Adventure Rain
Trailsurfer definitely has a valid point about PU coated leather and how it doesn't breath. These are an inexpensive touring boot, but as Trailsurfer would point out, they won't breath well, and to Scott's point, they'll be the minimum of protection for even light offloading: Alpinestars Scout WP I have a couple friends who wore their Scouts from Idaho to Tierra del Fuego and another 7,000 mile around India, so I suppose even the "cheap" boots can get you by.