That's interesting. I was thinking of trying TIG braze on top of a TIG weld for an upcoming project. I don't think TIG brazing (with silicon bronze) is quite as strong as traditional fillet brazing but with a TIG weld underneath I figure it's harmlessly cosmetic. It seems to pass my break tests anyway. This is a test weld. Obviously a bit rough especially by the standards of Andrew Stewart but with some more smoothing and lots of patience I might be able to achieve the look I'm going for.

Fake fillet braze with TIG weld plus TIG silicon bronze over the top.