RTN is clearly targeted for digital multicast channels -- but that's not to say that it won't end up on primary channels in some markets.
As for the "customized" schedule for each station, I have a suspicion about that. The majority of the programming that has been mentioned as coming from CBS Paramount for this network is stuff that they are already offering in syndication. That means that some of it has already been sold in various markets. Notably, Perry Mason is already running in several markets, including Portland, OR, Spokane, and (until recently) here in Dallas/Fort Worth. Another show mentioned in that article is Hawaii Five-O, which is now running in Dallas/Fort Worth on KFWD. Which means that if RTN were to pick up an affiliate here, that affiliate would not be able to clear Hawaii Five-O as part of the RTN package locally. Similarly, RTN affiliates in Spokane and Portland wouldn't be able to run Perry Mason as part of the network package.
In other words, the RTN feed will be customized by market to reflect the fact that not all of their programs are available in all of the markets that the network will run in. It may even be the case that the RTN affiliate could lose a program that it is running from the network if another station in the same market is willing to make a cash purchase of the local syndication rights for the same program.
It's not a bad deal for anyone involved. For CBS, it means the opportunity to get some revenue from these programs through RTN without losing the option of making more money through cash syndication. For RTN, it means the opportunity to carry some pretty good programs in many markets. For RTN affiliates, it means a full schedule of classic TV programs for now out-of-pocket cash. And for us as viewers, it means more opportunities to see something other than the same old "Senifeld/Friends/Raymond" reruns that are on in every market.