IPsec and 802.1x

Hi all --

I'm writing a new course on 802.1x and LAN security and all that good stuff,
and I've developed at least one question I'm hoping the list can help with.
Are any of you using 802.1x in conjunction with IPsec or other remote access
VPN configurations?  If so, why?  When did you start integrating it -- in
particular, did you use 802.1x from the beginning of your VPN use?  If
you've added it to an existing VPN implementation, what pushed you in that
direction?

If you don't want to discuss this on list, please send answers to me
privately and I'll summarize for the group.

thanks very much - tbird