To me, he showed to be a blend of Mason Plumlee and Nikola Mirotic, but not nearly as good as either
He has the range of Mirotic, and spaces the floor similarly. He also has similar handles to Mirotic -- not great, but isn't awful
His post vision reminds me similarly to Plumlee, as well as his approach to rebounding, although not as intense as Mason.
My biggest take on Porzingis is his size and lack of physicality. He seems to shy away from contact, and that's versus other thin Euros. How will he do versus someone like Julius Randle, or any other NBA big.
He's a stretch four. Not a PF, not a SF. He's not quick enough to be a SF, and he isnt big enough to be a PF. He's only being considered this highly because he is 19 years old, and that he might develop. But from what I see of him, unless he gains 30lbs and can play bigger, he'll never be a legitimate starter.
Not a chance I'd take him over Towns, Russell, Okafor, Mudiay, Winslow, and Cauley-Stein. My guess is he'll go #7 to Denver, next to Nurkic.