Beautiful flies. Been using them for a while myself and they work very well.
I have used them for quite a few years. Have an example from the early 90's on my page at Hans' site.
The dun's body has subdued segmentation - more smooth. That is why I tie the biot with the smooth side facing on these.
But, the emerger has a much more pronounced segmentation and that is when I use the shiny side facing outwards...
Late at the party, Alan, but you are of course more than welcome
Snipe & Biot
===================== You have a Friend in Low Places ======================
Hans Weilenmann, The Netherlands
I love using biots for bodies. In fact, not a wet fly, but I have been tying up Hans's flavio pattern the past couple of days for when our streams open around here.
I'll catch up one day!