I don't have a swana stick.... but I do have a couple of J sticks...
in 4 way, you can only move in diamond shape....
(well... but the travel to UDLR is the same....
so, more like a square rotated 45 degree....
not like a sharp diamond....)
in 8 way.... its more like a square.....
yes... square.... which means... if you want to go up...
you'll have less travel than if you want to go diagonal....
and you'll feel the diagonal easily....
(but sometimes..... I have problems feeling the UDLR....
I'm an intense player... I used to move the stick hard....
and sometimes, I over powered... (and my direction is a little off and I ended up going diagonal when I just want to go like up or down....)
but this might be just me.....
But I have to say this....
the stick is very good quality.... and J stick has the same mounting as Happs super / Comp.... which is VERY good....
hope it helps...