Any anode will extend its life, but the way I look at this is that powered anodes are most compelling when there is odor and/or a softener is being used. The latter can consume sacrificial anodes rapidly. In ordinary water without a softener, sacrificial anodes are probably superior because they’re cheap, have no parts, and don’t need electricity.
I’m proud to be the distributor for the powered anode because it’s a great product, but once in a great while they break, they do need electricity, and they’re expensive.
I think your idea of checking the current anode — provided you don’t share our concerns about aluminum — and replacing it with perhaps a powered one later on, makes sense.