flute = no other?

I like to play Euphonium and Tuba some times, because I found that both of these instruments can actually help my flute playing. But Nick and Hock Wei said that, playing both this instrument will be totally not good for embouchures.

Yesterday our flute tutor told me another story. She said that we should practice buzzing like brass instrument, which is what I did. However, her way is far more difficult, that we have to buzz through the flute mouthpiece, just like buzzing through an Euphonium without mouthpiece. I think if I can master flute, I will have no problem playing Euphonium and Tuba.

Nick also said that playing oboe is not good for flute playing. I treat that as some kind of myth also. For me, oboe's way of breathing is something that I have to learn. And I think that breathing is the hardest among all the instrument. Some may not believe, but in fact I think my breathing skills shoot up after I started playing oboe.

And embouchures? Who cares? Our tutor didn't even say about it lo...