Chapter 1. 'Would it really be a good thing to walk among the Gen life-potential fields unprotected by retainers? As a QN-1, (First Order channel, I wouldn't be bothered as much as a simple Q-class Sime, but still, I did rely on retainers for comfort in the steep field potentials of non-Donors, normal Gens.'
(Source: Index card file. Operation High Time --- http://www.simegen.com/sgfandom/rimonslibrary/oht.html) An ordinary, non-channel sime more bothered by "steep field potentials" than channels.