You underestimate the length a spinal flail can reach, it isn't just the skulls and spines of failed Liber authors that I use to make them. There are many extremely long necked xenos, daemons and even typos I can and do make some out of. :)
i am starting to feel right at home here i my just have to stop by more often.
as for the reach of your flail Talon don't worry it's length means nothing if you cant hit your target with it :D