Mainly flats. I use a lot of 1/8 & 1/4" CRS seldom over 2" wide, mostly 1". I don't know what kind of tonnage is required for shearing. I've got a bunch of punch press die sets also so a 1/4 & 5/16" single round punch would be handy.
Just trying to make my shop press more useful. I've made a 18" press brake for it with 3 sizes of female dies, 1/4, 1-1/4 and 3-1/2".
I have a mechanical shear, Rock River Mfg., Janesville, WI. that has a 1/2" x 4" capacity