I have used a No 1 a few times, and think I actually quite like it. It is by no means a target shooting reticle, it is very much a hunting reticle and makes real sense if you grew up with open sights. As you breath out, come up the front leg with the point and as the horizontals get to a third way up squeeze the trigger. Perfectly able to take deer out to 150 to 200m that way with a 4x Scope.
It works well in the dark - just bracket the beast with the thick hairs.
And on running boar it is ideal - horizontal in line with snout through the bum and swing through.
I have a S&B with a single square topped post and fine horizontals and do like it. I did swap it out for single red dot reticle in a Docter scope. Possibly a bit nicer, but not sure about electronics on a rifle.