Harold:
The split duplex with the 'dead' half has been a subject of discussion many times. Technically, I'll take a shot that it is 'wrong', as there is a single device that is readilly available. My opinion; show me why & I may agree. The wall wart transformer is (according to mfg) be mounted via the plate screw. Would I have an issue with tie-wraps? Probably not.
Back to the sump & ejector pumps; IMHO, the scenario Greg wrote above is a safety issue. IMHO, I have not heard of anyone saying 'the guy in xxx town wants GFI'.
