Getting all male koi has got to be an amazing stroke of luck!
But yes, I was very reluctant to take even one koi, and was happy enough with our large goldfish and shubunkins. His Honor the Chef has wanted koi from the beginning, but that's partly because he has fond memories of them from his years living in Hong Kong. Had this one koi not been in such desperate straights, I would have held off. And truthfully I'm not totally sure he'll make it, after having been in such an awful situation, but at least we'll give him a fighting chance.
And he (or she) is actually quite a handsome critter, in a color scheme that I believe is called kikokuryu. With the large scales along his back, he looks positively Jurassic! Here is one pic from earlier today with two of our largest sarassa goldfish:
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For size comparison, the new koi is about 30 cm in length, and Fancy Fin, the large red sarassa in the picture is just over 30 cm, including his impressively long tail. In this photo, the two sarassas look larger in comparison to the koi only because they're closer.