Personally, I'd never install an update to the Play store from ANY source other than Google themselves. You just never know what someone might have done to it.
I completely agree with the principle although in this particular case Android Police mentioned
The APK, uploaded by XDA member ecs1984, is signed by Google and upgrades your existing Play Store. The cryptographic signature guarantees that the apk was not tampered with in any way and is therefore safe to install. Use this download if you'd rather have the latest version rather than having to wait for Google to randomly push it to your device. Download and install it just like any other APK.
Its all about risk assessment, without any obvious advantage why consider it.
How many times on this forum do I read problems people are having from "latest versions" Official or unofficial ......when actually the previous one worked just fine.
Always let the over eager people do the testing.
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