Larry Feldman wrote:
If you need something to protect your feet until they can toughen up try ballet slippers.
Don't do it Adrian - tabi is the way to go. If you do follow the ballet slipper advice - choose the colour real careful and don't wear points.
As the first post mentioned he is training 5-6 times a week so the problem really isn't going to be solved by barefoot walking or tabi. It's part of the process. Even after several years most of us run into phases where the toughened skin just splits. I recently had a nasty one where my big toe joins the foot.
Tape it, sand down the built up skin, enjoy a foot bath. Slippers in fact only delay the situation assuming you don't intend to wear slippers forever.