For jewelry that is being worn, cleaning in the shower is the simplest method 
to remove debris and microorganisms. Soaps and cleaning products that
the client already uses would be the first choice because they are tolerated
by the client's skin.  Alcohol wipes are effective to clean the jewelry parts that are exposed.

Alcohol wipes should not be used a lot or continuously on the skin, but can be used for just the jewelry parts.

Soap and skin cleansing preparations are safe for normal skin.
If you have preferences you must realize that you are not a clinician or medical professional who knows the differences based on training and experience.
Using a manufacturer's claims or studies is not appropriate.

Customers are not experimental subjects for any product. 

You can read any of the publications of the prestigious Institute of Medicine 
and learn why we need to base our recommendations on evidence, 
not innuendo, not isolated cases, not supplier advertisements and
certainly not based on your individual experience, which amounts to:
"since the customer healed my products are the best."