Be not confused.
The hack works (provides a useful cushion) for my holster (OWB MR Upper Limit) for my body type (not thin), for where I wear it (fairly forward, 10:30 (I'm a lefty) at the point of my hip).
Is that near my Appendix? Dunno. Maybe? The thread title is "Appendix Carry", not "Appendix IWB Carry".
But no matter. Good ideas sometimes transcend conventional thinking, and so I wanted to bump the thread with another perspective on this useful suggestion.
That's pretty much it, really.