Marvpeck - Charlie probably uses the same heads in the studio as he does live. I read an interview in a drum mag. a long while back (mid 90's) with a drummer, (can't remember who), whose band had supported the Stones on tour. He said he had a chance to take a good look at Charlies drums on stage and he noticed the tom heads were really beaten up. He queried Charlies drum tech. about this who said that Charlie reconed they sounded better like this and wouldn't let anyone touch them...!
On this ebay link for Charlies 'Rogers' hi-hat, there's quite a good pic of Charlies drums from the hi-hat side and an interesting story about Charlies drums.
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cgi.ebay.co.uk]
The guy selling the Hi-hat is called Richard King. I think he supplied Charlie with his second maple set and also his green sparkle/goldplated Gretsch set he used once for a jazz thing. I believe this guy is quite approachable, so might be worth sending him an email and asking about Charlies heads.