Hey Luke,
I've made these out of both red and white oak, walnut, maple, elm (red and grey) seems to work with about any type of wood. The grips on these are rigid so I suppose you can splice the grip or use a take-down sleve....over 60" I use a 4" grip with 2" fades, if that works for a splice (never built one of those). I know there other guys on here thats building some right now and maybe they would know more about it.....dont see why it would not work.
half eye