In today's Dividing Line (Oct 24, 2013), Dr. James White helpfully interacted with the contents of the conversation of a caller calling in to Michael Brown on his Line of Fire show, as it deals with the issue of the Charismatic movement and John MacArthur's recently concluded Strange Fire conference.
Dr. White's manner of dealing with the sign gifts is definitely the way to go about doing it. More often than not, Charismatic (reformed or otherwise) treat the subject of the gifts atomistically, which is to say they isolate the question of the continuation of the gifts and deal with that question without situating the question within the larger context of redemptive history; within the whole issue of the purpose behind and function of the gifts. Those questions are not addressed holistically with the issue of the continuation of the gifts, but rather the Bible is treated ahistorically like a Systematics textbook just on THIS issue. It would really advance the argument if Charismatics can began to actually start addressing the Reformed Cessationist arguments instead of trotting out the same old rationale of there being no explicit mention of the cessation of the (extraordinary) charismata (I do note that some have tried, just not the rank and file "apologists").