I am embarrased to say, I don't know what a side cutter is.
What’s to be embarrassed about? You probably know it by some other
name that the rest of us aren’t familiar with.
A ‘side cutter’ is just a basic diagonal cutting wire cutter. Both
jaws are vee shaped, so the resulting cut is not square on either
side. This is in contrast to a flush cutter, which leaves 1 side of
the cut square & the other side not.
In the electronics trade a ‘side cutter’ is often called a ‘dikes’,
for the diagonal shape it leaves on the ends of the cut wire.