I don’t think I’ve ever seen a join as invisible as that and without an end graft. My vote would be to keep it as it is - no inlay - and let the wood speak for itself. But then I favour a more minimalist design aesthetic. If you were to add an inlay, the one you have prepared would work very nicely.
Edit: in sum, win/win.
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. I play Lowdens, Martins, Ponos, a Doerr and an old Kalamazoo 
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