Apparently, there's two schools of thought on the subject of Jinteki and 5/3s (there's a bit of this philosophical divide showing in the Power Shutdown Jinteki thread). My perspective as a member of the 5/3s are essential for turning the scoring windows Jinteki creates into actual wins camp is this:
Haven't done the math yet, but my gut feeling says this will be a great agenda for those Jinteki builds that primarily rely on gear-checking with cheap, small ICE (and potentially seek to do something about the solutions the runner installs). That way, the agenda is still somewhat protected if the runner gets through on a central, and presumably you'll have enough spare cash to be able to do the Psi game repeatedly without getting bankrupted by it. (Nisei Division is going to kick ass for this sort of build, I feel)
On the other hand, if you're going the "taxing ICE" route, PriReq's free rezzes will presumably be better - I've had a lot of positive experiences with PriReqed Tsurugis, Tollbooths, Archers and Walls of Thorns saving my behind, essentially prolonging the existing scoring window (that allowed the PriReq to be scored) long enough to get through one more agenda for the win. Sure, I've lost some games by getting my PriReqs cherry-picked out of RnD/Hand, but those were often the situations where a successful Psi game would have cost me more than the runner, so he'd just repeat it.
Definitely warrants in-depth testing, I love the fact that Jinteki finally gets its own 5/3.