There is nearly no SDE in the Index unless you really try to look for it. In the G2 I can’t even forcing looking at it but my eyes are probably the main limiting factor 
However I’ve never played before with the Index “Column correction” until this week-end and this is important. This is a setting helping reducing the vertical lines you can see in the Index (look at a very bright sky and move your head slowly to the left - or right).
When it is showing up, you can distinguish R,G and B vertical stripes if you pay close attention. This is normal and I believe it is just because the LCD panels are refreshing one column after the other as they are usually, but even at 120Hz you can still move enough to make the previous column displaying in fact after the next one. On my Index I’ve eliminated it with a fine adjustment of -4 for both eyes in Auto mode.