Divers have been using a combination Inflator/Regulator now for years. It’s a convenient and effective alternative to a dedicated octopus second stage. The biggest advantage of the SS1 design is the streamlined effect of eliminating a hose and not having a larger octopus to deal with. Another advantage is the high-performance design of the SS1 to breathe as easily as all other Atomic regulators and enable intuitive operation for buoyancy control. Other combination units on the market simply cannot match the design and performance of the SS1.