Range Report, as promised...
I shot 250 rounds at ranges varying from 3, 5, 7, 10 and 15 yards. I started at three yards, obviously, to check functionality and to make sure the front sight post held tight. All hits were center of target, POA=POI. Well, three yards? That's to be expected unless something is grossly off. To my surprise, all hits remained the same at all distances, POA=POI! I was both surprised (meaning my theory was proven correct that the taller front sight would be negated by the elevated rear sight off of the slide). All hits remained center of mass on what I consider a center of mass target, being a standard 9" paper plate target. The sights ran perfectly, held perfectly tight after the 250 rounds (absolutely no front sight drift out), and were an absolute pleasure to shoot. The one negative thing I can say is that their overall size is larger than the stock sights. This worked to my benefit until I hit the 15 yard mark, where I noticed my groupings opened up. All hits were still on target and still what I would consider more than acceptable for my purposes. I'll be shooting again on Saturday, at which point I'll push the distance and see what I can achieve. For defensive purposes, I can't say a single bad thing about these.
As a point of interest, I went with my dad who is a new shooter with a new Walther PPQ. He ran about the same round count through his Walther and we worked on correcting his poor(and new) shooting technique to dial him in. He did pretty good. I had a magazine and a half left to run through my P07 and told him to knock them out to see what he thought about the sights. He proceeded to completely punch the center of the target out at 5 and 7 yards like he was an avid shooter! The Walter is a great gun, so the only thing I could attribute this to were the sights. He agreed and is purchasing a set immediately. He loved them and said they made shooting and target acquisition easy. So, if you're on the fence, just jump!