speeding up backup with -Fc -Z ?

[FM <dist-list@xxxxxxxxxxxxxxxxxx>]

Hello,
During our backup, we are using pg_dump (sql format if no LO) and then 
gzip to compress the sql file.
I read that the "custom" format can also compress ( -Z option) the dump.
Does someone use the latest to dump/compress backups ? Could it be a 
good way to speed up the backup ?


Regards,