Default T-Mobile Google Voice Integration

I have T-Mobile and a Google Voice number. Can I port my GV number over to T-Mobile and still use that number with Hangouts and GrooveIP? I know support for third party apps is coming to an end in May for GV.

My main concern is being able to port my number and make calls on Hangouts from my PC with it. I have the $30 100 min 5 GB plan.

Sent from my Nexus 4 using xda app-developers app