Ummm I had 4 now down to three.

One pair of Nike MTB shoes with nylon soles.
One pair of Lake touring shoes with nylon soles (now gone to shoe heaven)
One pair of MTB carbon soled Nikes well worn (my spare pair) which I use for road riding
One pair of carbon Sidi MTBs which I wear road riding and are my everyday pair at the moment.

Got to have a spare pair in case my main pair get wet and don't dry overnight or need repairing. My Nike MTB with nylon soles are for if I go touring on a MTB and want to walk around. The Lakes always leaked red dye onto my socks so so they had to go!