Before adding a BC integrated second stage to your sport diving equipment configuration, consider how you will manage an air sharing situation with your dive buddy. It means you will be donating your primary to a buddy and switching to the BC integrated second stage. Technical divers know that donating the primary second stage to their buddy works very well, when they use a long hose on their primary. For sport divers, we recommend changing to a { 40 in | 101 cm } primary hose with a fixed-angle pivot-swivel adapter on the second stage and to use underarm hose routing similar to our Streamlined Open Water Regulator Configuration. The Streamlined OW Configuration is more comfortable while also providing a workable length for donation of the primary. The ultimate streamlined configuration version is using a BC integrated second stage as your backup regulator.
After adding a BC integrated regulator to your configuration, please practice a "controlled conditions" donation with your buddy.