Glenn,
One of the interesting things is that the horn actually feels soft and warm. It doesn't make sense but it is the truth. Horn is of course a natural material that has warmth and character and is much less of a slippery demon than it is made out to be. Having a knife with a buffalo horn handle is also something of an oddity here in the states. Everyone has wood handled knives but how many people do you know that have one with a buffalo horn handle?
I love both horn and wood handles and can say that I heavily use both and see no big advantage or downside to either. One other thing is that because the kukri is not well known in many knife circles, their use and handling are not well known. To many new users, the kukri handle is oddly shaped, awkward and uncomfortable but with some studying (HI library) and use you will appreciate that the handle is made that way for a reason, and it works.
You should check out the "Himalayan Imports Link Library" and read about the proper way to use, swing, handle, sharpen and store your kukri. Lots of great info there.