Why would I want to leave battens in my jib? I have a non-furling jib on my H16. The battens often get "stuck" on the mast when coming about. If I were using a furling jib, there are no battens, so can I take them out?
What is the reality.
Take 'em out and go for a sail. You will answer your own question. If it looks OK to you, then you don't need 'em.
It it looks like a baggy POS then you do. It all depends on your level of appreciation for a nice looking sail.