Calling result set returning service program procedure from SQL

Ok...I want to call a procedure in a service program from embedded SQL. The
reason I'm using embedded SQL is that I want the called procedure to return
a result set that the caller will consume. I'm on 7.1, so I know I can
produce a result set in the called by using this:

Exec SQL
Set Result Sets For Return To Client
Array :ReturnDS For :WkRowcount Rows;

And consume the result set in the caller with this:

// Call Stored Procedure
Exec SQL
Call Msp101R(:WkVnda, :WkMdl);

// Associate result set and result set locator
Exec SQL Associate Result Set Locator (:rResultDS)
with Procedure Msp101R(Char(5), Char(20));

// Define a cursor associated with the result set
// and Open the cursor
Exec SQL Allocate Csr01 Cursor For Result Set :rResultDS;

But I'd rather not use an SP if I don't have to - just another 'wrapper'
that I'd rather not use.

Question: Can I call a service program procedure from embedded SQL?

Question: Can I use Associate Result Set without using a Stored Procedure?

I want to the called procedure (that returns the result set) to be
available to both RPG and PHP.

Thanks!