It could be. With a resistance build every MJ is "worth" a lot more effective defense, so each SCB shot is correspondingly more valuable.
Being accustomed to SCBs will be an asset because with shields as low as that on a Cobra you could lose what remains in the few seconds it takes an SCB to take effect. Use them earlier, perhaps to get out of a sticky situation, to make sure you get every last bit if utility out of them.
There's a fair number of variables though to give you an accurate answer. Tend to fight hit & run in CZs or try to dogfight? Ship have any armour alongside that SCB?
