We investigate aspects of the effective interaction in a rainbow-ladder truncated meson model of QCD within a covariant Landau-gauge Bethe-Salpeter-equation approach. Based upon past success for the light- [1] as well as heavy-quark [2] domains, we discuss the range of applicability and features of a combined effort with comprehensive phenomenological claim and goals. [1] P. Maris and P.C. Tandy, PRC60 (1999) 055214, and references therein.[2] M. Blank and A. Krassnigg, PRD84 (2011) 096014.