I've always found the WW's to be quite simple to sharpen. I use a 6 or 8 inch mill file and file two edges at the same time from heel to point, rotating the head with each file stroke, until the head is sharp. Some pressure is OK initially, but very light pressure is needed to make them sharp. I then finish it with a ceramic stick or fine diamond, again working two edges together, but now working more across the blades rather than heel to point. Use light pressure here, too. From new to done is just a few minutes and when done will shave hair easily, snag your thumbnail or pop the rubber band. Yes, I have noticed that the blades aren't ground exactly straight, but it really doesn't seem to make a difference.
I've hunted with WW's and have seen four deer shot with WW's I've sharpened like this; none made it more than 50 yds.
I normally hunt with an Ace Express 2-blade, but wouldn't hesitate to shoot a WW, either.