Grey Owl my reply was not a criticism of Mors, simply that I disagreed with the statement that a straight bow is always the best one.
I live surrounded by trees, and willow (cut for basketry) and apple (pruned to keep it in fruit) apart, nothing around me grows straight lengths unless I cut down a sapling. It's really not that hard to find a bent bit of stick.
Besides a firebow doesn't need that much of a bend anyway, the cord can pull it into shape a bit if necessary, generally any bend is at the handle end. ( Imagine the curve of the branches at the bottom of a Leylandii)
If the straight bow works for you, then excellent

I find it too much like hard work for not enough return. That's my experience, yours is obviously different.
Mr Kochanski, as ever, offers excellent advice, but I suspect he'd be among the first to say, "There are other ways too."
If I weren't so bad at working out how to load photos every blasted time I'd suggest we turn this thread into a Show your Firemaking Kit thread
cheers,
Toddy