Using same brushes for oils and acrylics

Some artists like to use different brushes for oils and acrylics. I don't. I use the same brushes even though I know that water and oil don't mix. Since I wash my oil brushes in the same way I do acrylic brushes, with soap and warm water, the brushes have water in them anyway. The key is to make sure your brushes are dry and free of water before using them for oils, otherwise you will get bubbles. I dry my brushes by wrapping them in paper towels after washing them. I find this works well and I don't have to be careful about separating the brushes.