I gotta say, I like it. I had completely different encounters on a second playthrough in the forest planet, weird. But I like the idea of running into your clones... Which is kinda strange when it dont happen on the other planets, you should really implement the feature outside one world. I went back to the two planets with cities in them expecting to see a clone behind the brothel front desk or finding on in the streets begging for more dick of the three mooned place.
Please keep in mind that the game is a work in progress. Encountering your clones is planned for every area of the game. Currently, only Taun (Forest planet) has this implemented. Metris-2 (Space station) is next for an update. On Taun, there are biomes with different encounter lists. You likely strayed into a different one while exploring.