Qualitative valence bond formulations by Hiberty and co-workers (Hiberty, P. C.; Megret, C.; Song, L.; Wu, W.; Shaik, S. J. Am. Chem. Soc. 2006, 128, 2836) of mechanisms for the radical exchange reactions H· + F:H → H:F + H· and F· + H:F → F:H + F· are compared to a previously published formulation of the generalized radical exchange reaction X· + R:Y → X:R + Y·. The former formulation uses covalent-ionic VB complexes, and the latter formulation, which is more general, involves the formation of reactant-like and product-like complexes at intermediate stages along the reaction coordinate.