Nobody asked me but...

...no it is not OK for men to wear tweed.

Tweed was a fabric originally developed by the Victorians as wearable form of asbestos. It was usually worn by the man of the house whenever he performed duties involving fire, in a low-fashion setting. It was also adopted by gentlemen mountain climbers as well as being used to preserve bodies when there was no ice available. However, it quickly fell from favour in the early part of the 20th Century when Nobel Prize winning Physicist Niels Bohr proved, by way of a series of ingenius experiments, that it looked rubbish. Tweed was later outlawed in Britain until 1968 when then Prime Minister, Harold Wilson, revoked the law in the now classic tweedgate typographic error. Although it is still produced in mansize, most tweed in the UK is used for dustbin jackets and to pacify dogs. See also Kevlar.