Having a stud in the moon clip holder that protrudes through the clip is problematic. Here are the rules:
8.6.3 Speed Loader and Moon Clip Carrier Rules
8.6.3.1 Be suitable for concealed carry and all day continuous wear.
8.6.3.2 Speed loader carriers must either be of open top configuration and must retain the speed loader by tension or
retain the speed loader with a snap or Velcro closure. Moon clip carriers must either be of open top configuration, and must retain the moon clip by tension and a stud that protrudes through the center of the clip, or retains the moon clip with a snap or Velcro closure.
8.6.3.3 Moon clips may not be retained in the carrier by 3 or less cartridges.
8.6.3.4 The same exact location for speed loaders, speed loader pouches, moon clips, moon clip pouches, and/or
ammunition feeding devices in pockets must be used for every stage in a single match, unless otherwise specified in a stage description.