Really at this point all you ARE testing for is opens and shorts in the wire. I have never done this but I suppose if the wire runs will be buried with no easy way to replace it it can give some you peace of mind. And true, with data runs you can still have major problems that can't be found until the run is terminated and tested.
I also don't think there is any way to do this other than what you are doing. I would probably also check for shorts to ground. Never know when a run might be ripped on a metal stud.
Just out of curiosity how many bad runs have you actually found? Wonder if just being more careful would eliminate this testing which is pretty time consuming if there are a lot of runs.
-Hal
