Will a Billion BiPAC 7800DX work with the Azure VPN

I know there is a list of VPN appliances that will work with the Azure VPN, but for the SOHO user most of those are overkill.

I've read this article where a user has used an old Netgear VPN app to tunnel though a router and NAT.

http://www.bhargavs.com/index.php/2013/05/16/azure-vpn-behind-nat-on-the-cheap/

Is there any reason why this wouldn't work with all in one with a Billion BiPAC 7800DX

http://www.billion.com/product/3g/BiPAC-7800DX-Triple-WAN-Dual-Band-Wireless-N-600Mbps-3G-4G-LTE-ADSL2-Fibre-VPN-Broadband-Router.html

Virtual Private Network (VPN)
‧16 IPSec VPN tunnels
‧IKE key management
‧DES, 3DES and AES encryption for IPSec
‧PAP/CHAP/MS-CHAPv2 authentication for PPTP
‧IPSec pass-through
‧GRE (Generic Routing Encapsulation) tunnel

From my little knowledge of VPN's I can't see a problem, but if anyone can, that would save a $250 mistake

I ideally want one router, one IP where the office can connect to assets in the Virtual Network in Azure seamlessly.

Thanks in advance