A bow foil does not reduce the lateral loads introduced by the jib at all. It compensates the lateral loads in the bridle wires, which are caused by the their disadvantageous angle.
On the previous Javelin 16 (which I have), the moveable hooter/spi pole is attached to the bow and not to the forstay fittings (how do you call this in English?).
So far I can tell you, that the Bimare guys took care about unessential reinforcement hull reinforcement, and if they state "don't add a jib"...
However even without a jib it is a beautiful boat (or because it has no jib?) and seems well engineered, and when I finally get the opportunity to sail it (this week end if god is gracious, I am on the edge), I will tell you, if it sails as beautiful as it looks.
Rolf, it is maybe the Italien F16 web presence...
Cheers,
Klaus