I had the same concerns with getting a reo as it sounds you are. But, as long as you aren't pushing the limits doing some crazy sub ohm coil then you are fine. My best investment in vaping that I ever made was buying a reo.
So as long as I'm 1.0 ohm or above not much danger? at present I'm not interested in sub-ohm (probably in the future). The REO does look awesome, especially if it can be cleaned and juice flavors swapped out (unsure as so many people talk about only using one liquid per REO)