I think we can look at vented and bushed strikers as a couple more examples of cheap insurance, kind of like quick detatch scope mounts and auto ejectors.
Essentially a bunch of stuff that comes along for the ride, but if the bullshit hits the fan they come to the rescue for whatever measure of buffer they offer.

I think it also stands to reason that anyone who's looking at an action with that long and willful *come hither you brass sucking tramp* leer of want for a conversion into double rifle service should make double damn sure to put the strikers and thier smooth little puckerholes on the checklist -- and like everything else, to check them twice.

--Tinker