The way I see it is that if you don't get a straight and precise cut off line of the beam with the HIDs, there is no point in fitting them because they will achieve very little apart from looking super bright to oncoming traffic but the distance the beam can travel will be very short and far less concentrated than the factory halogens. I have tested that in my own Nissan x-trail which also has a reflector lens, but it has hi and lo beam in a single bulb. Only one of the HID kits from the entire HID kits on the market produced a straight and precise cut off line of the beam and that was the HID kit that had auto switching between hi and lo beam in the same bulb.
If any of you ZRE hatch owners can park in front of a wall and/or a garage and take pics of the cut off line of the beam, you can easily tell how effective the HID is, the same applies to any ZRE sedan owner who fitted HIDs, so we can compare.
Here are some pics of the HID kit I have in my Nissan X-Trail:
Here is the cut-off line in Low Beam:
Here is the cut-off line in High Beam: