The only boxer I've stumbled across in K1 was Botha. I think it might have been discussed on here before. He didn't try one kick and was winning against some supposedly highly rated bloke quite easily.
In the last seconds of the fight the kickboxer, in desperation, tried a massive roundhouse. It worked and won him the fight.
I don't watch the shit to be honest. And if I ever do through home-based drunkeness, I always root for the boxer.