Unable to Query Column With Same Name as Keyword

I've got a query in Sybase IQ 15.1:

SET quoted_identifier on
SELECT col."default"
FROM   systabcol col

Which runs fine in my query tool (QTODBC 70).  However the same query
in PerlDBI is return an error:

DBD::Sybase::db selectcol_arrayref failed: Server message number=102
severity=15 state=0 line=0 text=SQL Anywhere Error -131: Syntax error
near 'default' on line 2
 [for Statement "
                SET quoted_identifier on
                SELECT col."default"
                FROM   systabcol col
"]

I've also tried \"default\".