MO, it is absolute nonsense to think that encapsulated soil is invisible to the naked eye. It is the case when dealing with one carpet fiber, but when an encap solution is allowed to do it's job and the encapsulated soil is post vacuumed over hundreds of square feet, the accumulation of the soil gathered is very visible to the naked eye. It would have to be because it is a collection of soil laden matter.
As far as using an absorbent pad on CGD, I guess that maybe you have ruled fiber pads out completely and straight encapping would be out of the question. So much for a Cimex if that reflects your thinking.
Your "one" customer and his feelings that you mentioned are irrelevant. When CGD is encapped, the soil is removed via post vacuuming. That is simply the way it works regardless of anyone's feelings.
If you choose to use an assortment of absorbent pads on a commercial carpet and spend the extra time removing all of the soil possible, that is just fine. For that matter, you could HWE and then pad clean in an effort to remove all of the soil. But none of that changes the reality of the encapping process when it is utilized.
Encap is a process wherein commercial carpet can be cleaned at a more reasonable expense to the customer while saving valuable time for the technician.
One has to use common sense also. If you encounter a situation where the soil load is off the charts through neglect of basic carpet maintenance, then you would choose an extraction process as encapping does have it's limits.
Rick G was mentioned above. Yes Rick is an advocate of flushing a carpet from time to time, but he has also said that he has had accounts for up to ten years that have been maintained only with the Cimex and post vacuuming, and they still do not need flushing.
Mo, if you have a lack of confidence in the encap process then I suggest that you use other cleaning methods that you feel more comfortable with. There is certainly more than one way to clean carpet.