TL;DR Are the Vivobarefoot Scott IV Mens Zero-Drop?

Hi, I'm thinking about buying the Vivobarefoot Scott IV Mens, but on their website under the heading 'geo outsole' it says the following:

[...] this outsole raises up towards the heel to hold feet firmly in place.

This sounds like those shoes aren't zero drop which would be a dealbreaker for me. Does anyone have experience with this model or similar shoes by Vivobarefoot?

Also, if anyone can recommend other warm barefoot winter shoes, feel free to let me know. :)

Thanks in advance!