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Regardless of what it will do with the HHT it may shave well. IME if it will pop arm or leg hair without touching the skin it is usually close enough to shave. As I mentioned before, just try a touch...

It is impossible, IMO, to tell the keenness or the lack of it from photos. I would try doing 10 x strokes on the 8k first then strop and shave test. You can always go to the lower grits if that...