"but (−)-desmetramadol retains activity as a
norepinephrine reuptake inhibitor,
[8]" says
Wikipedia.
Never seen a binding assay for 2-FMA yet but would say it's fair to guess it will be a NDRA?
Based on the recent thread about releasers vs reuptake inhibitors these two should potentiate each other but as people mix stims without end it probably isn't that dangerous with sane amounts of both unless you have issues with blood pressure or are on yet another relevant drug like a MAOI.