I'd tend to avoid mixing the streams & go for a single node management system rather than attempt two at once- were it me. But I also am not invested in Vagrant, which people are free to enjoy, so if they can happily run both VM managers at once, so be it. Cool, I guess.
I would like some clarity on what exactly this hybrid achieves though- what is it's goal?
The only twist here is the software you are testing happens to be virtualization management software. Make sense?
>So, what, now you can virtualize while your virtualize?