I have sieboldiana Elegans and I don't have any problems with slugs on them. They are in shade and so far have not experinced leaf burn with them. Being in CA, I probably can not ship you a plant, but I could possibly mail you some seeds, although it is a very slow growing plant.
Potomac Pride is another one I have that doesn't have problems with slugs or heat, but again it is in the shade. There are lots of oak and hickory nut trees that they grow under.
Good luck.
