The zipper pocket is for the vita. I agree it is a bit of a squeeze. But with care it can be put in and removed without risk of scratching. It's main benefit for me is that it can fit my mains charger (just! Think this would be much easier with a EU plug.), 12 games, headphones (ear buds), headset and even room for my pspgo. Always handy having with me for long journeys, where there is no power socket. So it holds everything. Only wish they had thought more about the pocket for the vita itself.
Oh yes - don't buy the VIP case it is useless- one drop and my screen cracked!