If Have a CableIQ And LinkRunner, Is There Really a Benefit Of a Cable Certifier Like DSX-5000?

We currently use the following fluke products in our installations/testing (some are more for IT):

CableIQ

LinkRunner

OneTouch AT.

None of them do cable certification. If the customers do not require it, do you find something like the DSX-5000 to be really beneficial? With the linkrunner and the onetouch I can see if the wire is getting a gigabit connection to the router. I cant really see the reason why though.

Thanks

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