Pretty much every Vocaloid has a gender-swap. Even Rin and Len;
They both have a different voice, so if you lower Rin, she will not sound like Len, and pitching Len up will not sound like Rin.
The song below contains Rin, Len, Luki, Mikuo, Gakupo, Kaito, and Meito. These are one of those decent ones where the idiots don't pitch-change it in Audacity or such; done straight in the programme, like it should be done;
【Rin, Len, Luki, Mikuo, Gakupo, KAITO, MEITO】 "Summer Festival" english subbed
And if you hate the original, like the genderbent, remember they are the exact same VOCALOID voicebank, just different voice levels.