Wow, amazing story so far. I really like the premise. 

The writing style you have is very descriptive and benefits the story overall, particularly with the way you describe the feet aspects of the women, their smell, sweat, foot wear, and shoes.

I'm really digging it. There's been some teases, but I'd love to see Tommy lick and clean the insoles and sweat stains from the inside of their shoes, especially with the way you've written and described how well worn the women have made the insides.

Great work, I look forward to reading more.