A lot more interesting information has surfaced since I would free-dive before and/or after SCUBA diving. Although I never had any problems with the practice, now I usually have a separate day of free-diving, or may do a little bit before SCUBA.
Computers today give me the ability to spend a lot more time, and N2, underwater than tables. Since I am now less conservative on computer than the tables kept me, I make up the difference by being more conservative in other practices like ascent rate, safety stop, and free-diving.
Each to his own.
Bob
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I may be old, but I'm not dead yet.