It's been a while, have some screenshots!
I’m working on a new project with a whole bunch of friends and I just tried implementing multitexturing for the terrain. When I first tested it, I had the texture weight values incorrectly calculated so that only the bottom third had positive values and it looked pretty cool so I snapped some screenshots of it. I’m not sure why everything above the textured areas are blue, but I’m guessing it has to do with transparency and the background color.
And finally, here’s the working multitexturing: