Well you can make it sound any way you like, I'd say check out some videos, dual vco's are for sound design, on the other end you have something like Plaits which gives you presets. Spectral Processors are also effective when it comes to ambiance. I always do my research before buying any gear, read the manual and some reviews, check out everything you can find on youtube.
The most versatile complex VCO I have used is the Furthrrrr from Endorphin.es. It also has TZFM Through-Zero Frequency Modulation which the DPO doesnt have. I have TZFM though in some of my other ones and I don't use it much. I highly recommend the Furthrrrr.