Before going after a full set of minatures, I thought I would make up some paper troops to experiment with the DBMM rules. What I did was to grab some of Michael Krein's barbarian and Roman top down ancients pictures from Junior General, cut them out from the background and re-arrange them on 40mm bases in DBMM appropriate numbers. I then took the files down to thelocal printshop and had them print in colour onto card stock. The results are good enough for mucking around with the rules.
See also De Bellis Planorum for DBA armies that can be used with DBMM