Compressing RMAN backup pieces at O/S level

Per Metalink Note 247705.1
...

You can compress RMAN backup pieces at O/S level once they have been created
but keep in mind that these are not directly readable by RMAN. You will have to
manually uncompress these backup pieces before making them available to RMAN for
restore.
...

Does anyone do this or have any comments/thoughts? TIA.
Dianna G.

--
http://www.freelists.org/webpage/oracle-l