I have the all weather mats and I agree with everything Doug said. They have been great so far and are holding up really well. I would consider getting a set if your really wearing through the ones you have now.I have Lexus OEM all weather mats that are specifically for the IS-F as well if that is what your looking for. These are really nice all weather mats if your in that type of climate. I'm sure that any of the "F" owners that have them will tell you the same.
Oh snap...the fins are detaching. That sucks, I can just imagine how soft they must be. I have some weathertech's in my 4runner and they seem to hold up...they are just a bit bulky. Tough decisions....Here's some examples of the wear: