Depending upon what the end user's goals are, that's not necessarily a "must have", IMO.

Even some of those that have been advertised as designed for a .904 lifter are lobes that could probably work OK w/ an .875 "Ford" lifter, since the cam designer(s) didn't set them "on kill" as far as using the full lifter foot diameter.

Also, "Faster" isn't always "Better" when it comes to cams, but it seems to me that most people don't want to believe it. If you want to turn some RPM with a hydraulic cam, the fast rate-of-lift lobes are also more likely to experience valve train "crash" at a lower RPM than a less aggressive lobe.