A method of servicing a wellbore, comprising: positioning a tubular string within the wellbore, the tubular string comprising a first sleeve system with a first sliding sleeve at least partially carried within a first ported case and a first segmented seat being radially divided into a plurality of segments and movable relative to the first ported case between a first position in which the first seat restricts movement of the first sliding sleeve relative to the first ported case and a second position in which the first seat does not restrict movement of the first sliding sleeve relative to the first ported case, and a first sheath forming a continuous layer that covers one or more surfaces of the first segmented seat, wherein the first sleeve system is positioned within the wellbore proximate to a first zone of the wellbore, the first sleeve system being initially configured in an installation mode where fluid flow between a flow bore of the first sleeve system and a port of the first sleeve system is restricted; a second sleeve system, wherein the second sleeve system is positioned within the wellbore proximate to a second zone of the wellbore, the second sleeve system being initially configured in an installation mode where fluid flow between a flow bore of the second sleeve system and a port of the second sleeve system is restricted; isolating the first zone of the wellbore from the second zone of the wellbore; and passing a first obturator through at least a portion of the first sleeve system, thereby unlocking a first restrictor of the first sleeve system and thereby transitioning the first sleeve system to a delayed mode; allowing the first sleeve system to transition from the delayed mode to a fully open mode; and communicating a fluid to the first zone of the wellbore via one or more ports of the first sleeve system. positioning a tubular string within the wellbore, the tubular string comprising a first sleeve system with a first sliding sleeve at least partially carried within a first ported case and a first segmented seat being radially divided into a plurality of segments and movable relative to the first ported case between a first position in which the first seat restricts movement of the first sliding sleeve relative to the first ported case and a second position in which the first seat does not restrict movement of the first sliding sleeve relative to the first ported case, and a first sheath forming a continuous layer that covers one or more surfaces of the first segmented seat, wherein the first sleeve system is positioned within the wellbore proximate to a first zone of the wellbore, the first sleeve system being initially configured in an installation mode where fluid flow between a flow bore of the first sleeve system and a port of the first sleeve system is restricted; a second sleeve system, wherein the second sleeve system is positioned within the wellbore proximate to a second zone of the wellbore, the second sleeve system being initially configured in an installation mode where fluid flow between a flow bore of the second sleeve system and a port of the second sleeve system is restricted; a first sleeve system with a first sliding sleeve at least partially carried within a first ported case and a first segmented seat being radially divided into a plurality of segments and movable relative to the first ported case between a first position in which the first seat restricts movement of the first sliding sleeve relative to the first ported case and a second position in which the first seat does not restrict movement of the first sliding sleeve relative to the first ported case, and a first sheath forming a continuous layer that covers one or more surfaces of the first segmented seat, wherein the first sleeve system is positioned within the wellbore proximate to a first zone of the wellbore, the first sleeve system being initially configured in an installation mode where fluid flow between a flow bore of the first sleeve system and a port of the first sleeve system is restricted; a second sleeve system, wherein the second sleeve system is positioned within the wellbore proximate to a second zone of the wellbore, the second sleeve system being initially configured in an installation mode where fluid flow between a flow bore of the second sleeve system and a port of the second sleeve system is restricted; isolating the first zone of the wellbore from the second zone of the wellbore; and passing a first obturator through at least a portion of the first sleeve system, thereby unlocking a first restrictor of the first sleeve system and thereby transitioning the first sleeve system to a delayed mode; allowing the first sleeve system to transition from the delayed mode to a fully open mode; and communicating a fluid to the first zone of the wellbore via one or more ports of the first sleeve system.