Has Brutus previously lived somewhere else where maybe he had a bad experience with someone wearing similar shoes? If he's fine when you wear other shoes, I'd just wear other shoes.
A cat I adopted had an issue with shoes for a long time - I think she had been kicked and hurt by others before I got her. It took years but she finally came to trust again and now hugs my shoes!
JJ
A cat I adopted had an issue with shoes for a long time - I think she had been kicked and hurt by others before I got her. It took years but she finally came to trust again and now hugs my shoes!
JJ