really dislike the OEM seat.
I tried it with Goodwool sheep skin, with and without air hawk, on and underneath the sheepskin and all combinations... found no comfort as always pinching my inner thighs and pushing me foward to the tank, even with setting as described previously.
I took the bike (ST1300) to a local coach trimer Alan at OZTRIM, 03-98702747 in Ringwood and for < $100, he sculpted, sanded, glued and modified the seat.
now I sit in the seat not on it and its much better. Still not a long day seat imho but much better than oem.