Ha ha ha - the day I joined my current firm I had hair about a foot long and wore black leather and jeans by preference, but the partner who gave me my job offer answered my question of "So, do you have a hair length policy?" with "Just do what you think is right for the client, Rory."
So short hair. Luckily most of my clients are smart casual, so no ties, unless I'm chatting with CEOs, FDs etc.
And even then I tend to wear Tigger, Pink Panther, Winnie The Pooh, or Kangaroo ties
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Rory
MkIIa, blue lit buttons, memory upgrade, 1Tb in Subaru Forester STi
MkII, 240Gb in Mark Lord dock
MkII, 80Gb SSD in dock