I can only speak for myself.
I have not been on any ppi drugs for 2 years, I only been on natural supplements.
I tried hcl with Pepsin in August 2011 and tried it for a week. However, I bought the lowest dosage possible 320mg. I didn't feel that much different. I sort of gave up a little early on it.
But the thing to note is I was not on any ppi. The bottom line is I don't know how or what would happen if you tried it.
How old are you? If your older, acid tends to decrease.
Do you have any pain at all? Like ulcer or sore esophagus?