Excellent work, D! I really like tip underlays. At the end of the day, you can get away with LESS wood at the tips than a static design made from one piece of wood. That is to say, a laminated section "x" inches thick will be stronger than a non-laminated section "x" inches thick. So, you need less wood to keep it stiff. Anyway, I digress...
Good choice and great work! Somebody's gonna be really happy when that shows up!