go to Scotland and there it is masculine.

I wouldn’t say that. In Scotland wearing a skirt is still seen as feminine. Wearing a very special kind of skirt is seen as masculine in certain contexts. If you’re wearing a kilt, a sporran (the purse thing), knee length socks, the right kind of shoes, etc. it’s definitely a masculine style of dress. But, without all the accessories it’s more ambiguous whether it’s male or female. And if it’s not a tartan at all – say a miniskirt, that’s definitely still feminine in Scotland.