William,
Have you looked at the wading pants? I think those would be easier to put on and take off. Plus, they would help your body breath a little better.
http://www.orvis.com/store/product.aspx?pf_id=2G52
The big key is getting something that will hold up to brush scrapes, scratches, and the abuse the back country dishes out. I would carry more weight to have this security.
JMO...
