We investigate the relations that must hold among baryonic Isgur-Wise
functions eta(i) in the large-N-c limit from unitarity constraints, an
d compare to those found by Chow using the Skyrme model [or SU(4)]. Gi
ven the exponential dropoff of the eta(i) away from threshold, unitari
ty requires only that the usual normalization conditions hold at omega
= 1, and that eta = eta(i) near threshold. Our results are consistent
with, but less powerful than, the Skyrme model relations. This shows
that large-N-c analyses comprise more than just unitarity constraints.