I kind of keep tabs on these guys from time to time. Since they had started using SARE rules in their commercial product. Looks like their new version will support SURBL. Jeff you might want to drop them a "Hey there!" email.
http://www.omni-ts.com/Forum/ShowPost.aspx?PostID=2913
Chris Santerre System Admin and SARE Ninja http://www.rulesemporium.com http://www.surbl.org 'It is not the strongest of the species that survives, not the most intelligent, but the one most responsive to change.' Charles Darwin