Thanks, everyone!
I appreciate the kind comments. I'll post some more pics by week's end (hopefully) as I get it finished out.
Aero: yes, I did have to cut through one growth ring over a long taper to get it flat. However, the 4" long glue joint contains 3" of the back ring. This ring is secure via the lamination created with the siyah and poses no structural problem. Plus, the tips start to thicken immediately where the siyahs begin.
toomanyknots: I used Urac to attach the siyahs. I like it because you can cure it with or without heat.
sulphur: the bow was somewhere around 54" before the siyahs, and without running down to measure it I can't remember the angle I attached them at. I'll have to measure that for you. Yeah, sinew would add some spit and zip, but I haven't the time, patience, or sinew. I prefer an unbacked bow simply because I get impatient
Aries: Yes, the rings on the staves from this tree are nice and thick. Sure makes it easy to chase them on the back, but I get more set than I do with tight-ringed staves.
Again, thanks for looking!