I haven't met a deer yet who will do more than nibble at ivy- they don't seem to like the taste of it any more than I do ;)

Wintergreen's another one that they leave along (the leaves taste as strong as the berries)

they don't seem to like Pachysandra, either- gods knows there's enough of it growing here in 'bucks' county...

Lamium is semi-evergreen in my neck of the woods (zone 6) it gets mashed pretty flat, but bounces back pretty fast as well.

Goutweed (false lamium, around here it's also called 'snow on the mountian, which is a totally different plant) is fast spreading- well, no, it's downright invasive. but it's pretty, impervious to just about anything known to man, spreads quite fast (it roots at every leaf node if you'll let it) and it's another one of those things that deer can't hurt- they can chew it down to the dirt, and it'll pop right back up in the spring.

If the slope is where you just want groundcover, and nothing else you could try crownvetch, it's invasive, but does have nice pink flowers.

Look into the epimediums- some are semi-evergreen, some are deciduous. Not all are z4, but E. grandiflora is. It's semi-evergreen, but it is recommended to cut the foliage back in early spring- you wouldn't have to worry about that!