While getting certified, I did some reading in scubaboard to try to figure out what kind of gear I should get. For BCs, it was clear that there were two camps - bp/wings and others. The bp/wing approach seemed like it was for technical/advanced divers and after getting some advice from my dive shop reaffirming that bp/wings were not for new divers, I went with the *others* camp and purchased a Zeagle Brigade BC.
Along with my Zeagle Brigade BC happily purchased from Scubatoys, I got a small UK flashlight. The Brigade has a little pocket that seemed perfect for keeping a flashlight.
On one of the dives during my open water certification weekend, I went to look in a little hole in a rock formation. As the little hole was dark, I went to deploy my little flashlight. Unfortunately, with 5 mil gloves on and the flashlight being an almost exact fit into the pocket, I was not at all able to pull the flashlight out.
On one of the next dives, I tried simulating an ascent while breathing from my Zeagle safe second (similar to the scubapro air-2). I found it cumbersome to try to breath from the regulator and vent from it at the same time. Forget about trying to keep track of what depth I was at using the dangly integrated computer.
First, I went back to my local dive show. I saw tons of retractors and lanyards and all kinds of little doodads. After leaving the diveshop completely clueless on what I needed to do to simply store a little flashlight such that I could easily deploy it when wanted/needed it, I went back to the scubaboard seeking guidance on how to configure my Zeagle Brigade platform such that I could easily use the gear I was using already (flashlight, computer, safe second) and also trying to figure out how to add additional gear I was bound to need as I got further along into diving.
I read a bunch of "its personal preference" and "its all up to you". It was at that time that I realized that this approach was complete and utter bull crap. I was a diver who had about 5 minutes of diving experience. How was I supposed to synthesize my own gear configuration? I mean, at that stage, even Albert Einstein would not know what he doesn't know.
Then one of the local divers gave me a hint regarding the hogarthian gear configuration. In that gear configuration, one uses a bp/wing as the foundation. You add gear as needed - for me, first it would be a little flashlight. The configuration seemed like it already had all the stuff sorted out. There is a place for the primary regulator when not being used. There is a place for the spg. There is no computer dangling all over the place as that stays on your wrist. So on and so forth.
So for me, I got into diving to dive. I did not get into diving to rediscover optimal gear configurations (paying for mistakes with my hard earned dollars and risking my bacon every time something did not go as well under water as it did on land.) I saw a gear configuration that was tried and tested by divers far smarter and far more experienced than me and that gear configuration was repeatable. And the foundation of that configuration was the bp/wing.