Kevin,
What I Do like, are the few Germanic rifles that followed this Spanish design in the fluted buttstock.
I think they can be very attractive and have a barrel in the rafters to make such a gun.
There are two shown in Harold L Peterson's book, "The Great Guns". One by Michael Wagner in Cronach, 1703, and one by Paul Poser, roughly the same time period.
Can't recall if they are in George's Jaeger book...