Here's my personal feel of the Huawei Pura X and its Harmony OS 5.0
My set is bought from Huawei's Beijing Store. Why I bought this? Just boh liao walking in China and buy for the sake of buying.
It doesn't support esim, 2 x physically sim slots support.
If you are using it out of China, they provide EasyAbroad app for installing whatsapp, etc. If I remembered correctly, these are containerized applications, like whatsapp, etc. You can also install google apps like drive, sheet, docs, slides, meet, gmail, but the search is limited from their app, there seems to be some sort of default filter even when I selected to search via google play store (it will pop up during the app search)
You cannot search for any VPN on this phone, you will see a disclaimer message about VPN law...

But you can install Onion VPN, Onion Search Engine, OrNet Browser.
In the More connectivity options, they do have the option to setup VPN manually, so if you setup a VPN tunnel to your home router or NAS, you should be able to make it work. I m too lazy to setup and fully test this function
The phone has NFC, but I didn't try to install anything to make payment. Again, lazy to test.
Also, I am a user of IBKR app, you will encounter outdated Android System Webview, which you have no way of installing the latest version. Afterall, this is not an Android phone, so be advised.
Chrome browser can be installed but will crash on certain sites, like Samsung... Lazy to go deep to check why.
POSB app can be installed, but never tried to login yet until i have a deeper understand of the harmony OS.
Camera feature is nice, got some sort of built-in meitu (AI-driven). screen size and feel of the phone is nice, just wish it was thinner. Got wireless charging on it