The front facing pic doesn’t look too “walking friendly” IMO
I’m looking at the pics, it looks like a concrete roof tile http://www.eagleroofing.com/products_eagleProducts.htm# to me,
Masonite/woodruff… I’m not aware of any masonite roofing products being installed currently, the one’s I’ve run across were “funky” to say the least and many were subject to class action suits (I think it’s long enough ago the claim period was done some time back). I can tell you a home in built in 2008 doesn’t have it…
Take a pic and post it from a bit closer when you’re doing the inspection… you’ll get some feed back if you have any questions. You will be able to tell without a doubt what you’ve got when you’re closer.
Take some pics and post 'em for some feedback. I’m sure you know this, but don’t walk on something you’re not comfortable doing so. A good ladder and binoculars on those steep parts may be well advised.
By the way… some reading for ya http://www.eagleroofing.com/pdf/ProductLiturature/InstallationGuides/FRSAInstallationManual.pdf