I own & love the same Tweezerman brush. I personally have not experienced the same flawed finish, but I guess you can try the poly route. For $10. I would just wait for some sort of noticeable fall off in badger-hair quality and then toss it for a new one.
[B]Personna Speed 3 Premium Triple Blade Disposable[/B], Gillette Sensor 3 (w/stock handle), Merkur Futur (Gold), and Gillette Fat Boy (circa 1960). Merkur Platinum & Derby Extra Double Edge Blades. [B]Edwin Jagger Best Badger[/B] & Tweezerman HIS Deluxe Shaving Brush. The Body Shop: For Men Shave Cream, [B]My Time Bath and Body: Menthol (10/10)[/B], and Noxzema Skin Cream. Caswell-Massey Tricorn Aftershave, Pinaud Clubman Aftershave, and [B]Old Spice Original Aftershave[/B]. The Body Shop: For Men Face Protector.