First of all the set up:
My V1 is hardwired high right in front of my noggin (not the best place, it's an Escort smart cord designed for my 9500i which has the port on the other side of the detector.) I placed the Redline low in the middle of the windshield w/ an unobstructed view.
They didn't seem to interfere with each other, the only thing that could have been happening was that the Redline was "dumbing down" the V1.
The redline alerted to my usual falses first accept for one instance, it also alerted to an unseen 34.66 Ka alert thet the V1 did not.
I got blasted w/ instant on Ka and both units alerted at the same time.
This is all I have for now and is not the proper way to test this unit, I may be "lending it out" for some more scientific testing in the near future.