Thanks guys! That's some food for thought for sure. I think I'm going to shelve this for a while as it seems it doesn't have any real advantages over a regular whoopie. I think I'll make some dogbones instead!
On a related note, I remember hearing that soft-on-soft connections are bad, but I see more and more that people are larksheading dogbones to whoopies, or whoopies to other whoopies etc. Is there a downside to doing this or have I just been misinformed this whole time?