Advent has just 1 fd option, i think. So that better fit whatever your setup is.
As for the general question, yes a sub 1:1 ratio can be useful. Its standard on mountain bikes and standard on almost all gravel bikes.
My gravel bike is 48/32 mated to 11-36 and while I don't spend much time in the 32/36 combo, it does get used on some of the punchy 12-16% grade climbs I ride.