Well, Stower, I congratulate you on the ownership of a nifty instrument. I listened to the video and plan to look for 'The King's Bouree' for my band.

But if I were you, I wouldn't play the way Dante is playing for very long. Just looking at his hand position made my own hand hurt. To see what i mean, do this:

Drop your hands to your side at a relaxed position. Pretend you are thinking of something else. Looking in store windows, perhaps. When your hand is nicely floppy, pick up something round and as small as that 'plectrum.'   Notice how much you have to tighten your hand? Then imagine how long you will hold your hand tight while mastering a fascinating new instrument.

I would try a thumbpick, the kind that wraps around the thumb and allows you to relax your hand. Experiment with the quills if you wish to replicate the ancient sound, but don't use them all the time.

Keep in mind that when this instrument was new, few people lived past 40. Modern people have to keep using their hands till they are 80 or even 90.