combo gun 12ga/30-06 : I personally like the 1x? scope...

I personally like the 1x? scope mounted as low as possible and build up the stock so your cheek weld is perfect when you throw the rifle up.  With it set up like this you can even use it on flying game on 1x.

If you have an 11mm rib UTG makes a little clamp  adaptor 11mm to Weaver that is about the lowest way to mount a scope on an 11mm rib.

My combo gun with either a Leupold VX-II 1x4x20mm or Weaver V-3.  I've had both on the gun and they both work well.