Laser can only be used from a fixed stationary point. All mobile units must use standard KA/K radar. So yes, stationary traps using laser may be difficult to avoid, but any moving units will be picked up in plenty of time. I have found that the traps + mobile units today are made up of 90%+ radar still. Laser is not as common as you think.With today's use of laser radar, the only thing your radar detector will tell you is that you have been caught.
X50 saved me many times.