Yes, but several of the functionalities would no longer be available depending on the placement of your VPN appliance. 

If your network is currently set up like this:

Wall jack  --> VPN appliance --> Wifi router -->devices

You can set up Winston as follows:

Wall jack --> modem  --> Winston --> VPN appliance --> Wifi outer --> Any devices you want connected by Winston

If your network is currently set up like this:

Wall jack --> modem --> --> Wifi router --> VPN appliance --> devices

You can set up Winston as follows:

Wall jack --> modem --> Winston --> Wifi router --> VPN appliance --> Any devices you want connected by Winston

But please note that if you had to set up port forwarding for your original configuration to work, you will need to set up that same port forwarding with Winston. That capability is not currently available, but is on our roadmap, with anticipated completion in a few months from now.