It actually works crazy-good on the Nebula family.
I'm just talking about aesthetics here.
Dominion shield? blech. the purple bits are mostly confined to the warp nacelles.... and it replaces your hull paint job with this boring white scheme. Yuck...
The Reman one isn't as bad. It still hides your paint job, but at least your paint gets covered by something that looks cool, however the green panels end up in the same places as the Dominion purple stuff.
Borg though? With Borg, it KEEPS your actual paint job and puts the patches of Borg tech all over the saucer section! It looks awesome!