Her suit version came from the Fate/Zero, the 4th Holy Grail war when she was summoned (?) by Kiritsugu Emiya, and I don't think Kiritsugu is the person who would buy Saber cute clothing, in fact Kiritsugu wears a very similar suit himself with a jacket ;P
@Queenie:I really like the suit :D I'd rather see Bishojos in suits/office attire than the type of clothes that they gave Mio in K-On's 1st closing video -_-
@Cocona:the names sound similar so I thought of asking :P but I do know that Cocoma is an Ar Tonelico character even if I havenìt started playing it yet.
Hm...I just love Saber so much that I don't really care much, but if I have to choose one, I would choose the one she wore at the final ending, when Shirou met Saber in Avalon, that dress she wear is plain and simple, yet attractive on her ;P