BC - Safe Passage Comb Guides

Today John and Nathalie discuss a comb guide that was recently brought to John's attention from a listener.  This comb guide is meant to be placed on the bottom of Topbar hive bars in order to help encourage the bees to draw out their comb in a straight line.  However, this specific comb guide claims several other advantages that make it stand out from all others... including nature itself.  Is this latest hive invention all it is cracked up to be?  Tune in now to hear John and Nathalie's initial impressions for the prospects of the Safe Passage Comb Guide...