Got one two or so years ago - very comfortable but - danged if I could prevent it riding up over time.
There are those that say they work well as ''chest bands'' - yet to try that. A guy I know who is a holster maker - well, specials, not leather - asked me about just this and I reckoned a Defender style but flesh colored - could be quite useful.
That said - 99% of my carry requirment is met by my regular 16/7 OWB.