The Nomad, for me is a naturally flippy ball. I have mine at a regular label leveage layout. Pin, even with the ring finger and cg on centerline. The coverstock is a perfect compliment to it's nature and eventually smoothes everything out. With this drilling the ball was surpisingly stronger than expected.
If you are looking to use it on house shots, and for everyday use, I would opt for pin down. Not that you still wouldn't be able to use in tournys, as well.
If you want it for both tournys and regular use, I think pin up gives you a little more versatility, and a little more power on the backend as well, to turn the corner on heavier conditions.
I am actually planning to get another one, just so I can have the pin down option as well.
Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
Some days you're the bug; some days you're the windshield.