Do you mean, it is easier and faster to pull the knife by the fob out of the pocket?
YesSir... Let's look at knives that are design for stabbing for example:
Here is your Microtech version of the "deep pocket" clip
There is a bent in the middle, allowing you to grab the knife for the pommel part, and the clip, and draw, without putting pressure on the below "spring" part.
Very thoughtful design IMO for a deep pocket clip.
Here are the most "normal" knives with area behind the clip, where you can grab the pommel and draw the knife normally,
imagine, there are no fobs on the pictured knives:
So people usually put deep pocket clip on a knife they want to conceal. But this make drawing very sluggish, this is where the fob is helpful.
I usually grab the fob with swipe of my pinky and ring fingers, the move is natural, you don't have to look at your pocket.
You draw the knife out of your pocket, the wave feature opens up the blade and your middle finger, the index and thumb are ready to grab the knife and adjust the grip.
To me it's fast and reliable, done it for a long time.
Here is an example of a great fob made by @GarryGravley, attached to the clip of a normal Endura, helping to deploy the wave feature.