Here is my .02 cents
OK I put some pics on Jpeg. they are just ideas and a few are what has allowed me to be "Known">? in a small circle, I guess it's because of the simple look? I will try anything for a handle! I have experimented with hickory and oak

which have not let me down. Good enough for grandpa's axe it's good enough for my knife. I burn my oak and don't use guards with my strong woods, I also love cutlery rivets for a new old look.

I also love Cocobolo and Bocote All these woods are strong as heck and beautiful polished out naturally....with a few trade secrets.

The shape of guard I see possibly on yours is shown on the boot knife below....Simple and easy. That's the boat looking thingy that holds the boat to the dock???

I will not tell you that is a bathroom towel hanger for a guard. Last I have experimented with my "Hump Knives" although your knife is not concave as mine but the Humps allow two hands to push or hold the knife and for some reason I find them ergonomic.

OK these are a few of my secret ideas, LOL. I say no stag stupid simple

and don't use a guard if your going with a strong wood. Try some oak or hickory different stupid and simple!!!??? Cool These are just ideas and I think what you are doing is great!!!!! Can't wait!!! This is fun!