Used to fly Porter occasionally when I was in university to travel between Toronto and Ottawa.
I remember they branded themselves as the premium airline that offer lounge access for all passenger at YTZ and YOW, targeting business travellers.

Thing have changed slightly since then but they still have a pretty solid offerings for the east coast.
The only issues are their unreliability (partly YTZ's fault, not entirely on Porter) and YYZ frequency making it mostly uncompetitive against Rapid Air.

I don't travel a lot domestically these days so I don't think I can take much advantage of it. It's good that they try to capture some of Air Canada's market, I hope they succeed