Vandel,
It looks like the Butterfly Health product will be effective only for the slightest of leaks, not even what I would call mild incontinence. Of course, the nature of the product is such that it will not contain odor. I would guess that it will be one step better than a panty liner (and yes, during my early days of incontinence, before it became more severe, I did wear my wife's panty liners, so I guess I am qualified to venture an opinion).

Potential users may include males who are too embarrassed to buy panty liners in a store.
I used a similar product before my fecal incontence became more severe and found it to be better than nothing, but not reliably effective. I will be interested to read some first-hand accounts from users.
--John