I took a photo of all my razors earlier today, and when I picked up my Dovo shavette to close it, I thought the edge looked wrong. I looked at it with a magnifier, and then using my light bounce test, and the edge was utterly wrecked - way beyond what I would ever try to shave with in a DE razor. That blade has had 5 shaves on it. The blade is a Derby Premium, and in comparison, I got 16 shaves from one in my Edwin Jagger, and the edges were nowhere near that wrecked when I discarded it. OK, the shavette blade only has one edge, whereas the DE blade has two, but that's still a big shortfall on shaves for a heck of a lot more edge damage. Is this typical? Do other DE and shavette users get a reduced blade life in their shavette in comparison with their DE?