Back to the original question, I haven't used the style conversion software but that's mainly because I have built up a large library of KN6000+ styles. Bud has done a great job in converting styles and making them available, and I have made a list of these styles plus the tempo of each one, and I regularly look thru this list to find something suitable. I have also styles from a German site that unfortunately now seems to have closed down, and a number of styles from various other sources.
The last time I looked at the style conversion software I seem to remember that Yamaha was missing (as Jan has said). Now if they included Yamaha then that would open up a lot more styles. Meanwhile, I've plenty to use.
Mike