I have been using Positive Grid Bias FX for a while. One feature in Bias FX that I miss in S-Gear is a global output EQ. I.e. a simple parametric output EQ that remains the same when switching presets.

When jamming along songs or backing tracks it is very convenient to quickly make a rough match of the output with the track.
Another use case is when switching guitar. Some guitars may need a little EQ to better match the favourite presets.