Drilling cement and CIBP/CR - Bit (Tooth vs PDC)

Looking for peoples experience in drilling cement and CIBP/CR and the performance of Bits and / or Mills.  Historically i have always used Tooth Bits based on the recommendation from Baker.  We have also use a junk mill on occasion.

Has anyone experience in drilling cement and CIBPs using PDC bits and if so any issues? 

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