ERGONOMICS
Advantages:
• Rapid auto-locking
• Visual locking indicator
Disadvantages:
• Sleeve must be unlocked each time the carabiner is opened
• Tricky sleeve operation, especially with gloves, requires practice. System is less "ambidextrous" than the others
• Two hands needed to insert a device into the carabiner
SAFETY
Advantages:
• Security of triple action locking (excluding rubbing and external pressure)
• Rapid auto-locking
Risks:
• Chance of improper locking when the carabiner closes (e.g. sling caught between the nose and the gate). The user must verify that the carabiner is properly closed and locked, even when using an auto-locking system