The full Borg shield set synergizes with the Borg weapon/console set.
That said, the Borg shield doesn't work as nicely on escorts as it does on science ships and cruisers. the Borg shield set isn't a 4-piece deal anymore so it's generally better to just run straight MACO on escorts.
If you really wana be an ahole in pvp run 2 piece borg set with elite fleet shields...pve run maco +borg 2 piece (not the adaptied its pretty much KDF Honnor guard shield not any good sept for being annoying)
"But it ain't all buttons and charts, little albatross. You know what the first rule of flyin' is? Love. You can know all the math in the 'Verse, but take a boat in the air you don't love, she'll shake you off just as sure as the turning of worlds. Love keeps her in the air when she oughta fall down, tells ya she's hurtin' 'fore she keens. Makes her home."