All barend shifters are friction for front shifting so they are all mix-and-match among the various manufactures. Rear shifting is brand-specific so you will need Campy barend shifters if you make the change.

The Mirage brifters will continue to work as brake levers only if you wish.

I'll go along with the others and ask what's the incentive for the change? I've used barend shifters and brifters and the brifters are by far the more convenient.