Thank you! I welcome you to try geocaching some time if you're ever out, it's serious fun. 🙂
Discussion
I will. I heard about treasures about a week ago, but I've never heard of this concept. Looks fun.
Something came through! I see a payment without a note in Alby, too, so something happened. 
I asked it to show me how Treasures handles NWC like you said and it gave me this awesomeness:
Haha, that's quite the analysis. Treasures only supports webln at the moment, but I'm working on adding NWC support to mkstack as we speak here (which will likely manifest in Treasures shortly after). Good news soon, hopefully!