Cubase 7.5 with Avid HD Omni

I was wondering if anyone has got cubase runnin properly without latency, etc with an AVID HD Omni (pcie card) system…
I use both DAWs (one to compose, one for recording/compatibility with big studios work), and i’m planning to renew my set-up. So i’m seriously considering getting a PT HD setup, but don’t wanna loose Cubase that I also love.
Anyone experienced with this?