Well I certainly wouldn't say I found that easy but it does get easier as you get into it and as you pick up Jack's wavelength. I really enjoyed getting to grips with his style and I thought this was a cracking puzzle. Being one hour ahead in Italy gave me a head start too.
FOI after a slow start was 12d. LOI 21d which was fiendishly disguised. COD hard to call but as it stumped me for so long I'm going 11a.
Can't figure out the meaning of the Nina yet. I daresay someone here will.