The Candiru is my most used ESEE. It's in my back pocket every day. My wife gave it to me for Christmas two years ago. This wallet has pretty much killed my pocket knife rotation. All I carry now is the Candiru with a SAK Farmer.
@Emac made those and fitted them before gifting it to my wife. Hopefully he can come on and tell you for sure, I think he epoxied them on.
Back in 2012 I was super fortunate to be one of the first to use the Candiru. I used an 18" Tramontina machete and the Candiru...never did I feel like I was lacking in tools. -RB