Is there any benefit to having both an ordered and unordered index on the same column in postgres?
I am combining several good comments into a comprehensive answer.

Order on a mutli-column index could have a bigger impact on efficiency than a single column. In my case it is only one column.

Postgres can scan indexes forwards and backwards just as efficiently. The index which does not have an explicit order is ordered ASC by default.


  Specifies ascending sort order (which is the default).


This means that the two indexes are redundant.