Shoes go off as soon as I'm in the house. I do wear clothes when I write. Old, torn tee shirt and similarly old, torn shorts. The cats like to jump up on me and the tabby likes to crawl around--lap to shoulder, shoulder to shoulder, shoulder to arm. If they're going to stick their claws into something, I'd rather it be old cloth, rather than me.
Besides, I sit in a vinyl kitchen chair and if I'm not wearing clothes, I stick to it. A real office chair is on my list. Right after the new computer, digital camera, laptop, new vacuum, new sewing machine, new futon cover....