Osage is a mystical wood, from the trees to the wood that's bright yellow to chocolate...the THUMP of an Osage orange always gets me charged up.
A lot of shooters really don't like the sharp grip on the belly side of the bow, and it can be too sharp if the bowyer isn't careful, but you do get used to a good one in a little time and it's easy to see why it's so good at reducing torque with a normal Hill style bow. My favorite is not quite 2" deep and maybe an 1" wide, with a thicker back than belly in a nice wedge. I think there are those that can shoot any grip, but many folks benefit with certain designs that promote good form, as Pavan explained why he has a preference.
BTW, Good luck out there Brian, it's absolutely frigid in MI and I'm sure where you are as well!