I've tried this combo actually and there's a bunch of pH issues (it's a 2 part formula, pH must be between 4 - 6 pH, temperature must be below 40C, it doesn't work in cationic cleaning systems, , the clean kitchen environment needs to be an actual stainless steel, commercial grade kitchen). For a small scale manufacturer, the two part system might prove difficult with the pH and temperature needs.
In addition, the combination, while proving effective isn't actually approved for use as a preservative.
Cosmocil CQ in combo with potassium sorbate would an effective, non-paraben preservative that is easier to use. It is considered a fast-acting broad spectrum anti-microbial effective non-formaldehyde, non-paraben preservation gentle in-use water-soluble heat and UV stable. If you use Potassium Sorbate, which is low in pH, you'll want to also use Citric Acid to bring the pH back up to a more neutral pH.
That's just my two cents. I hope they are helpful.