Using SECUREFILE in STORAGE preference?

I know I can set BASIC_STORAGE preferences for a CONTEXT index. For r_table_clause, the documentation states that The default clause is: 'LOB(DATA) STORE AS (CACHE)'.
If I'm using 11g, does it make sense to specify this as: 'LOB(DATA) STORE AS SECUREFILE (CACHE)'?
If so, do any of the other SECURFILE options (like COMPRESS or DEDUPLICATE) make sense?
Thanks!

As far as I understand, option SECUREFILE (CACHE) wont make any sense with both base table and $R table, IF
- all your queries are using the specified index
Other way round, if all your queries are using index always, then it can fetch the required data from $R itself and it wont require to access the base table for LOB data.
But, for other option like COMPRESS it very well make sense.
If you use COMPRESS option only in $R table, it compresses the data of only $R table but your base table still uses large amount of space.
So, for big LOB data, you should definitely use COMPRESS for base table too (keeping in mind about the performance issue while syncing index etc).

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