Hello smhoon,
Yes, we understand the reluctance to install Adagio until all the modules are available, and we know that most of our Adagio sites run both Ledger and Payables. If there was any way to do this development faster, then please let me know.
Of course, your clients could be running the multi-currency modules we are shipping and be able to benefit the Financial Reporter and statement e-mailing (in Receivables).