I find that my V1 doesn't seem to have tunnel vision. If I get an alert (on KA band) and I am around a corner or on a side street the V1 will alert to the KA. I do keep K band on although it isn't a threat in my town. I noticed it just eats K band alive. I get alerts well in advance and before I approach a curve.
So I was curious as to those with a V1 if yours seems to have this tunnel vision where it won't alert to a radar source until you are on a collision course (same direction that is)