RE: One scope for a slug gun and a rifle?
Pickerel,
I have the VXI 2-7 on a .243 and a VXI 2-7 on a 12 gauge and have had no problem with either. You certainly could do it, but I find mounting scopes to be a big pain, so would try to go with 2 scopes. I found the heavy reticle (sold as the VXI shotgun model) to be much easier on my eyes. I would at least try to get ahold of both versions to see what you like best if you go this route.
KEJ