I just don't see the appeal of being able to take your porn on the bus, subway, restaurant, grandma's house, business meeting...
...when I jerk off, I want to do it in the privacy of my room and have it on a screen big enough where I can tell if it's an anal scene or a lesbian orgy...
...then again, that's just me.
Like you say, I think it will be a novelty for about an hour...
The key is being able to sell to the schmucks in that first hour.
