Just got my screen earlier today. Deni, Mike, Peter, and to everyone else who shared their experiences in this thread, MUCH THANKS! I'm really into manual lenses, so getting the screen and installing it properly was really big for me.
I actually feel like a kid on Christmas day.
I got mine from China also, and the screen looks to be well-made. And it's a bargain at $25, too! I still cringe at the price of the Katz Eye. No doubt it's a good screen, but I haven't the budget for one (this also goes for Haoda screen).
To everyone else who still hasn't a split focus screen, I encourage you to try one. Not only would it help with manual lenses, it's also a good thing to have for macro photography. Another possible benefit for this is to have another form of checking for AF lens focusing errors.