In my opinion there is no reason to fear a shunt. They typically don't fail, and they aren't a connection to worry about corrosion, unless you would install it on top of the battery.
The Victron I have uses one, so did the ebay special that I had in my previous 5th wheel. I also deal with some at work that have been installed for over 70 years, and still working.
That being said, the Victron is much more refined than the ebay one, but they both end up giving the same information. When the amps start tapering down, you are getting closer to fully charged.