I have in fact never made a complete dive with the sitech quick glove system without incident. That is because at least one of the gloves always popped off enough to leak before I ended the dive. I made many dives where the gloves completely popped off multiple times before I even entered the water. Squatting down to purge your suit of excess air can make them pop off. A giant stride could make them pop off. It became a huge inconvenience. I have also had them disengage ascending and climbing a ladder.
Because there is nothing holding on the gloves except the friction from very small orIngs, it is very easy to have any movement of the glove cause it to disengage. Because of the Non-mechanical engagement method, you can’t really expect it to hold well. This mechanism is nothing like the diving concepts / ultima / kubi systems which use much larger orings that snap into place and are much more secure.
The disappointing inability of the quick glove system in my experience led me to quickly switch to the glovelock system. I used that Yugo for a number of years with mostly success, until I discovered, the Mercedes of glove systems, the rolock.