Depends how the bank and the stock alt/VR setup would behave without it.
With a high-CAR LFP bank, if it's enabling charging
to remain constant, while without it the load was being throttled off and on from the Alt overheating
or if it simply reducing the load on the alt,
then less wear with the Sterling.
Bottom line is it gives control over the load.
But with a lead bank that wasn't stressing the alt being current
limited anyway, no difference, just getting a better Voltage setpoint