Dopey, the woven leather is applied to a fleece. That would made me think it has to be lined.
But, keep in mind, like Mr. and Mrs. Maftei explained to me three days ago, in Vienna, social norms dictate this sort of last as popular and socially acceptable. Thus, Maftei must produce this style of last. However, this does not mean that Maftei does not or can not produce any other type of last that you want. They like producing rounded waists for me, but they said that no one in Vienna would wear them if they produced them on a regular basis.