What is your definition of shared hole? Do you mean like for a cross tie off where the tie-on string runs the opposite direction? In other words, it closes the grommet as it bends around instead of opens it up to make it easier. My 4D200Ts tie off like this, and it's not really that annoying. On some with this sort of setup (see any Head racquet with the stupid caps on the hoop, it makes it cursingly irritating.
The problem with the kBlade is the same as with my Aerogel 100, except opposite. It's because there are two main skips, when you go to string the last cross, there are two strings blocking the grommet. That means that if you've got a floppy cross like natural gut, or a multi which is "strandy" (Thunderblast, for example), even cutting the tip makes it irritating to get through. On the AG100 however, the mains tie off at the head, so before tying off the last main, you can keep the mains clamped and preweave the top cross so you only have one blocked hole. With the kBlade, the mains tie off at the bottom so you have no choice. They also don't enlarge those grommets with this in mind. The second problem with that frame is the cross tie off. Like many Wilsons, it ties off on a cross very near to the outer main. That means you have little room for a knot. It's pretty much touching on the kBlade, however. Even a Wilson knot (which is all I use) is cramped in there. No me gusta.
