My original main had vertical battens that were somewhat thick and pockets with Velcro closures; definitely had problems with hang ups clearing thru the mast slot. Five years ago, I had a loft modify the sail to include Neil Pryde’s thin battens and redesigned batten pockets that eliminated the Velcro. Problem solved no more jams. It helps to release sheet & Vang tension and to furl head to wind or wind slightly from port side, also slight tension on outhaul to get a tight wrap of the sail inside the mast. I can’t comment on the performance aspect as I only changed from one vertical batten to another. As expected, you’re not going to get the performance of a conventional sail with horizontal battens; however, the performance will be better than furling main without battens because of the larger roach on the sail that is cut for vertical battens.
When I eventually replace my main, I will purchase another Neil Pryde with battens; I think that they have a better understanding of Beneteau’s in mast furling system.