tl;dr it's really good. Probably the best you'll get in this price range, especially if you need a headphone jack and big battery.
Took two weeks to arrive then another week to unlock the bootloader (if you want to use anything other than Miui you need to wait for a countdown to expire). Installed the pixel experience ROM from XDA and it's been pretty solid. Battery life is around double the Pixel 1 (7-10 hours screen on time), camera is just as good but with more lens options, and it's noticeably snappier (expected, more ram and faster processor). Connectivity speed is about 3x faster on WiFi and 4G. Very premium and solid build quality, glass all around. The included cover is minimal but fits well and has a nice grip to it.
Negatives: the screen scratches very easily, already got some deep ones from coins and other pocket shit. Nice having a huge screen but it's definitely a stretch vertically, I prefer 5" phones. Fingerprint on front rather than rear is a downgrade too. It sometimes struggles to switch to 4G from WiFi, requiring a dip in and out of airplane mode, but this could be a software issue. Some fiddling required to remove Miui and set up a custom ROM. Popup selfie cam is kinda stupid but also funny to show friends and hasn't caused me any trouble yet.