  We present a model independent closed form expression for |V_{ub}|^2/|V_{tb}
V_{ts}^*|^2, which includes the resummation of large endpoint logarithms as
well as the interference effects from the operators $O_2$ and $O_8$. We
demonstrate that the method to extract |V_{ub}| presented by the authors in
hep-ph/9909404, and modified in this letter to include interference effects, is
not just a refinement of the method introduced in hep-ph/9312311. We also
discuss the model dependence of the latter proposal. Furthermore, we show that
the resummation is not negligible and that the Landau pole does not introduce
any significant uncertainties.
