ASM vs FS backups

We are looking into location for putting the backups in a 2 Node RAC 11g. Performing the backups to ASM looks easier because if one node goes down, backup location is available from the other node. With NFS that will be an issue if one node goes down. On the other hand, backing up to file system gives the comfort level of being able to see the files from the OS and even copy for cloning to a dev DB or other reasons. It seems the backups are going more on the ASM along with the datafiles.

Can the listers give their thoughts.

Thanks.

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