Larry Vickers and Mike Pannone recently announced no AIWB(Appendix Inside Waistband) carry policy for their open enrollment class. Here is the detailed explanation from Mike Pannone on the issue
http://soldiersystems.net/2015/06/23/mike-pannone-new-ctt-solutions-class-policy/
One of the incident is written out in this AAR(by Stan08)
http://www.calguns.net/calgunforum/showthread.php?s=321b5a5cf7b4ac99c13a495d923cdd2f&t=1080843&page=2
From: Soldier Systems, Calguns