I've had one of those on my V-Rex for a couple of years. The thin padding seems to have compressed a bit over time - I supplemented with a one inch Nu Foam pad (available at your local Jo-Ann fabric and craft store). Recently converted the Screamer (Captain) to the thin integrated RANS pad with 2" of Nu Foam under it. Rode that 20 miles last Sunday and it felt very nice.
Curious to hear if a bandsaw or other tool can be used to trim down the stock foam.
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Bacchetta Giro A20, RANS V-Rex, RANS Screamer