Failure points and what you "need" or don't "need" are relative terms and I really wish folks would stop using them as definitive items. We dive with many items that we don't "need", but it sure makes diving more enjoyable. For most divers, it is for recreation, so to advise that they don't "need" something because of a perceived or possible failure point is really ridiculous. I can poke holes in the "need" for some of the DIR kit, because most of it is designed for cave diving, but cave diving is very limited in most recreational diving locations, but in those areas with limited caves there is a large DIR following that swears a long hose is "needed". I am not against a long hose, I use one, but is it "needed". So, swivels, noise makers, jacket BCs, and all other other items that are deemed not "needed" are all preferences to allow us to dive for enjoyment. The majority of divers are not technical, so please don't dismiss one product because it doesn't fit your type of diving whether actual or perceived. So, when someone asks how to assemble a pony, don't tell them it is a bad choice or it isn't "needed". If it isn't what you use, let someone who uses one explain how to configure it, just that simple.