No. CAPT EFIS hit it on the head.
We are confusing the question. Of course you can GPS arc above applicable LSALT or in manouevring sector. You can do what ever manouevres you like above the LSALT - lets not limit it to GPS arcing!!
BUT, I think you are asking about manouevres below LSALT on a published approach, ie a VOR/DME. The answer is an obvious NO. GPS is not a DME. They even tell you which approaches you can use GPS simply by the way they are named - GPS Arrivals. GPS/NPA. Its easy when you look at it that way.
The ATO may have misunderstood the question (I hope).
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