I belong to two penturning forums and have noticed over the years that beginners invariably make their first several pens, usually Slimlines, wasp waisted. And, often, they put in a lot of other bulgies and curves. And, gotta confess, that's what I did with my first. I believe it may just be the fun of actually doing something with the lathe for the first time that they get carried away trying all that 'stuff'. Granted, the pens are mud ugly. But, most who continue making pens get away from that and develop other, more attractive, styles.