Personally i am not a fan of the way the E2 and other similar cameras mount, but i cant say it have hampered testing, but on a uneven surface there are some shake in the image due to the not super strong mount.
But in day 2 day i dont see it as a big problem, will the camera swing up in a "massive " event, i think so, and this could be a problem with aftermath recordings, CUZ i doubt most people will have the camera in mind when you just had a big shunt.
So the issue are not something i have noticed in regular footage, so i do not feel it is a big problem.
Also i feel that the way the E2 mount are less stealthy VS a wedge shaped camera that often come off as yet another sensor on the windscreen, but again how the layout are on the windscreen also have a say.
In my car i have a dotted area in front of mirror, i can mount cameras on this so just the bottom part with the lens peek out below it, this mean the " footprint" of the cameras mount are less noticeable.
As you can see here, looking at the dashboard, there are slight vibration in the E2, nothing much but this street are also not very uneven a dirt road would be worse, but i dont drive on those very often, and generally Danish streets are not super bad.
E2 plate capture on a not that good day / time of the day, when i talk about low light performance in dashcams i dont mean in the middle of the night, on a summer day say you drive into the shade of tall trees or tall buildings next to the road , that would impact something like plate capture even if it it is in the middle of a sunny day.
But that is a general thing with all dashcams i am aware off.
The video are scaled up to 4K in post production as my editing software can not handle the original 1440p resolution
You can browse the install thread, it have many pictures with different cameras in different cars, some modern cars with a lot of sensors on the windscreen you have to be a little creative.
dashcamtalk.com
For instance you can be forced to mount offset of the middle of the windscreen, and as the windscreen curve this mean the aim can become a little off, not much though most often the wide angle lens will be just fine.
But a camera like the E2 on its ball joint mount you can adjust up and down / left and right to account for such things, you can also turn it 90 degrees to film say a side window, this seem important to some people.
You can even turn it 180 degrees and film the cabin if you wanted to.
Many wedge shaped cameras, well you can only adjust them up and down and not to the sides.
In other cases one of the barrel / cylinder shaped systems might be a better idea, at least in regard to mounting options and stealth so people dont notice the system so much.