Update:
Just to test I sent 3 ETN to the paper wallet and checked it with the .cli tool, I have 17357 blocks and 3 ETN.... This means that if I have mined about a thousand blocks I earned just a fraction of ETN in 18h..... for me there is no way!
Ok, it all depends on which hardware are you using to mining, but i think that for this coin you have to invest too much in hardware and electric energy, especially if you are playing with a bunch of Vega. Obviously it's just an opinion.