I have a RAM mount for my iPhone5 on my motorbike. Never had an issue with it. I have been using the RAM from when I had the iPhone 4 version.
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I'm using an Iottie in the D5. Works a treat. Very flexible re install the the snap clip for the phone works well.
iOttie Easy One Touch 4 Smartphone Car Mount For iPhone and Android Phones
That thing in the middle of the holder is that a magnet to hold the phone. I am not sure those are clamping the phone would work with the Pixel 2 as the sides of the phone are squeezed to access functions and those arms would most likely turn these on. Likewise the back is a bit high so you cannot access the finger print scanner at the back to wake up the phone.
Edit - I just went onto their Aussie site and the only mount they have for my phone is for a bike.
Thanks for the tip - I appreciate it.
Garry
Also using the RAM X-Grip with windscreen mount. Had it over a year, and has never fallen off or vibrated even with a 7" tablet on it
Thanks