Share 'tiki 26 - zip on the main'

hello everybody. Spring is coming and I'm going to change my old -old main sail. I asked Jeckel for a new one and he told me the new main sail are full battens, but above all  they have a bright new zip in order to furl the sail. Of course it is very comfortable, but is it safe? I mean is the main strong enough even with the zip? Is it easy to fold, to place it? Will it last enough? Have you got…