I would say it this way......

If you’re expecting the quietness of an oe hyd cam/valvetrain using a retrofit hyd roller cam & lifter combo in an old school platform that includes a typical performance lobe design....... you’re going to be disappointed.

They more often than not will have comparable operational noise to that of a tight lash SFT street oriented profile.

A quick google search for “hydraulic roller lifter noise” will bring you tons of hits for pretty much every engine platform and lifter brand out there.