The excellent 16 page pictorial step by step manual (pdf attached) for setting up IPSec VPNs on a Cisco SA500 with Shrew Soft client, is no guarantee that it will work on the Cisco RV220 already deployed with QuickVPN before realizing the following obstacles.
1) Windows 8 clients won't work even installing & running client in Vista SP2 mode and Cisco support confirmed QuickVPN is not Windows 8 compatible.
2) Only one device at a time is able to connect behind the remote location routers.
3) A client with red-hat linux cannot connect as QuickVPN is only for non-8 Windows
4) A client using his work device that has another VPN client software can't connect with QuickVPN.
Hope IPSec resolves all three limits of QuickVPN. The $179 for 10 seats of Professional Shrew Clients is within means but 803Euros for 10 seats of TheGreenBow for only three years is beyond current budget. I might get one single license of TheGreenBow if it will also work with the other 10 of ShrewSoft to enable the one client using a corporate VPN.