I've given this a listen now.
Both songs have no guitar in at all and are very much closer to ambient music than most of their other songs. Arcenstone is from another project altogether, although still sounds similar to Summoning.
Unfortunately, both tracks aren't much better than demo quality, as far as the actual music goes. The samples of speech are as clear as ever though (although somewhat cheesy in Saruman at times.
It's not a bad release by any means, but it's certainly not on par with their other material (primarily because it is effectively material for their other bands, at least in style). It acts as more of a Gateway to their side-projects than anything else, I would say.