Too right; I have the same complaint as Jeremy. Our mats are just perfect; but going to a place with wrestling mats involves a double footload of seriously nervous piggies.
Bryan: If you're concerned about slipping on the mats; you could try putting a little talcum powder on the soles of your feet before stepping on. Not enough to leave a residue; just enough to control the sweat. Also; getting out of your shoes and walking around for about 10 minutes in bare feet prior to stepping on the mat helps a bit as well.