I'm another barefoot sewer but I don't even walk to the ironing board without slipping my Birkenstock back on. I had Plantar Fasciitis and had steroid injections in both heels, so I never go barefooted but cannot work the foot control with shoes on. My cousin was a diabetic and once stepped on a threaded sewing needle without realizing it. Didn't know until she found the thread coming out of the bottom of her foot--the needle had alread migrated in completely. So, if you have diabetes, please be careful walking around your sewing area barefoot!