[Soekris] Soekris net4801-60 as OpenVPN appliance?

[AMuse]

Greetings, all!

I am considering buying a few net4801-60 boxes to install Linux (or BSD)
on. My end goal is to build an OpenVPN network between two business
sites who have no space or tolerance for the noise of regular PCs used
as routers.

Does anyone have similar experience with the 4801-60 as a VPN/Firewall
setup?  What packet throughput was sustainable? And, as an additional
question, has anyone used the vpn1401 card with a 4801 series box
successfully under Linux and did it provide any improvements?

Thanks in advance for sharing.

--AMuse