Hey man, I don't know about the grippiness, but last time I handled a Vantage Pro, both my small and a friend's large, they have fairly slick handles that only feel good one way in my hand. Probably not for all people, but in my hand, I couldn't really choke up because of the flipper, and the general design felt kind of funky for some reason.
The Para 2 has a way more comfortable grip for me in almost any way and having a choil to choke up in is suprisingly useful for smaller or more detailed cutting.
Finally, In terms of quick use both would be fine, but I also realized that if I use my Vantage Pro for more than a couple minutes the part of the liner that sticks out of the handle starts getting pretty uncomfortable. The Para 2, not having any protusions by where you grip, feels a lot more comfortable if I have to squeeze down or hold onto it for longer.
Hope this makes sense.