Yup, satin wipe on poly = great success.
I like that handle as is.
Keep it simple, we shoot these bows for simplicity and tradition ... but when we make em we put on leather handle wrap complete with beaded lacing, string silencers, 4 layers of tip overlays of phenolic, ebony, gold and elephant tusk, tip underlays of horn, a string with 6 colors, sinew backing over bamboo backing over hickory backing over 3 core woods etc.
Then make it a takedown, paint the limbs, and brand it with a mountain landscape.
I'm as guilty as anyone but that handle is too nice to mess with.