I've turned E-09 and Army fronts. It does even the wear out. There's no reason why TKC's would be any different. IIRC Tripletom of this parish has done the same with a TKC front, although he did have to sand the direction arrow off to get it through an MOT
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I'm not dead.
As for the wheel itself... I haven't had a stock front for a couple of years, but ISTR if you get it the wrong way round it puts the wheel a bit off-centre, too far for the caliper sliders to accommodate. ICBW.