If multihost networks on Docker for Windows means Docker Swarm, then it is achievable if using old beta version of Docker for Windows (1.12-rc3-beta18 below) with some additional network configuration (to be specific, port forwarding) on Win10.
It is achieved by the old method, using SWARM images rather than the new native SWARM mode provided by the most updated Docker for Windows. The SWARM nodes runs on a virtual machine normally with IP 10.0.75.2 inside Win10, and uses port 2375 (for working nodes) or 4000 (for manager nodes) of that virtual machine to do communication among Docker Swarm. After that, with port forwarding on Win10 by using “netsh interface portproxy add v4tov4 listenport=2375/4000 listenaddress=Win10_IP connectport=2375/4000 connectport=DockerVM_IP”, a Docker Swarm among docker engines on multihost windows is created.
Please note that additional port forwarding on Win10 is necessary if a network services inside a Docker Swarm node needs to be seen from other hosts in the overlay networks.