Haruhi Ver.KA. No I'm not kidding. Katoki has other talents than designing mecha and he has eyes for pretty girls. Another historical evidence as follows :-
There was an interview years back citing that he was under the influence of Sailormoon when he designed the Nobel.
Of course, there are other famous Mecha Designers that also possess similar traits as Katoki :-
Such as Yutaka Izubuchi here. Famed for designing the Nu, Sazabi, RahXephon etc.