Yes, you can root a plant in soil, but it's a little harder. It also depends greatly on the quality of the soil. Be sure to use soil that holds moisture well.

There are probably people that have more experiance w/ cloning in the indoor section. I have only cloned a few times; once in rockwool and a few times in soil. Neither were that sucessfull. Only about 25% survived to plant, but I only grow outdoor at this time in my life, so I haven't done it in some time.