Savageduck
So? The fact still remains, regardless of personal opinion about Adobe, Lightroom, & Photoshop, those using that software have the ability to maintain a fully non-destructive, and reversible workflow, that includes reversing the effects of any filter including USM.

Floyd L. Davidson
It's not a "reversible" workflow. The correct terms would be either a non-linear undo, or simply that it can be reverted.

nospam
the correct term and the one used by everyone except you is a non-destructible workflow.

Floyd L. Davidson
But a non-destructive workflow is not a "reversible workflow".

Which doesn't make any difference anyway, as the topic is sharpening algorithms, not editor workflow design.