I do see his point if you "modified" it in some way you are in a catch 22. The only legal answer is an AFCI breaker in the panel (if it would take one) and a GFCI receptacle in the first outlet. The last I heard C/H is the only one with a combo GFCI/AFCI and that was a breaker, not a "box" device.
Sorry guys. My day was going too fast. I should have looked in the index for "Receptacles" and then under "Replacements" and I would have found it. I share my office area normally with a 2 year old grandson, 6 year old grandson, and an 11 year old granddaughter, now that school is out. It gets hectic sometimes, but you that have grandchildren probably know "the bond". Anyway it keeps me from getting "too involved" in my work sometimes. Constant time in front of a computer doing estimates etc., can get pretty stressful and give you serious eyestrain:) A little diversion helps sometimes:)