I was wondering if anyone knows which subcontractor Canali uses for their shoe line
None, really. Workshops that specialize in different phases of production hold the shoes at one point or another. There are not as many manufacturers that produce shoes from beginning to end as you might think. And the big 'brands' rarely use these firms, except in the case of special shoes. Mostly it works like this: Brand contracts with design firm. Brand commissions last, which become their property. Brand sends lasts to independent workshop in Romania/Slovenia/Hungary (depending on who they want to use), along with leather requirements, for upper/welting/filling work. Sometimes, uppers are assembled in Vigevano and then shipped to Eastern Europe. Workshop sends completed uppers, still on lasts, back to Vigevano for bottom work/finishing. Shoes are delivered to Brand. Brand takes beautiful photo, and marks product up accordingly (or excessively, depending on whether you work for said Brand, or are a consumer) BTW, there is no Ferragamo factory - there is, however, a Ferragamo museum.