Complex sentence: Some backswords are curved in order to make slicing/chopping action easier, at some expense of thrusting power, but this should not be seen as an overwhelming trend in the type, but rather limited to specialised forms.
Split into simpler sentences: Some backswords are curved in order to make slicing/chopping attacks easier, at some expense of thrusting power. This should not be seen as a general trend in the type, but rather limited to specialised forms.