erm, lemme think:
with SA u can whip once every 5 turns and have a permanent 1
without SA if you whip once every 5 turns you will have
1

for t1-5
2

for t6-10
2

for t11-15
3

for t16-20
3

for t21-25
4

for t26-30
and so on and so on
There are many situations where whipping once every 5 turns is quite realistic, so I'd say the SA is real good because it turns serious anger into nearly nothing.
And in the situations where you want to whip once every 2-3 turns, it turns crippling anger into something much more manageable.
If you aren't wanting to whip so often, then SA is no big deal. A cheaper courthouse.