I have posted my experiences with electric handbrakes and brake hold before, perhaps ad nauseum, but it was some years ago. May be of interest to some more recent mk4 owners.
After many years driving a manual car I had developed a bad habit in stop/start traffic of applying the handbrake just slightly before coming to a complete stop. (barely moving - the driver behind would not have noticed) But if 'jumping the gun' like this with electric handbrake the car would lurch suddenly to a stop. Sometimes quite dramatic. Even when braking to a definite and complete stop I found it better to delay applying the handbrake by maybe a second to allow the car time to settle back down on its springs . Otherwise there was a short creaking noise.
Once I learned the delights of brake hold I encountered a similar problem .I would sometimes come gently to a stop on the footbrake but unconsciously come off the brakes just a fraction before fully stopping, allowing the car to come to its own gentle stop. Barely moving, a really , really tiny amount of wheel rotation. But the cars abs system was able to detect this and brake hold did not activate. When I took my foot off the brake pedal the car would start creeping forward again. Not dangerous, plenty of time to apply the brake again to make sure I was fully stopped. At which point I was confident brake hold was applied. . I quickly overcome both bad habits

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