I won't be as knowledgeable as someone with a Shiba, but I did do a lot of research when I was hoping to bring one home.
Here's what I learned from some breeders and websites-
Shiba Inu's are often described as cat dogs. They are very independent animals. They are not clingy at all. This makes them great hunters. They are a one owner only type of dog. Not 3, not 2, but 1.
They don't bark like other dogs. They yodel. I haven't heard one, that's just what the breeders said. I'd be interested to know if they actually do. They were originally bred in Japan. They are still extremely popular there. They were bred to be hunting and guard dogs. They still have a very strong hunting instinct. One of the breeders we talked to said she had one lady return her puppy because it brought a dead squirrel to her door step almost every day. If there are any small animals outside where you live, or if you have cats, you'll need to be careful. Shiba's are also very intelligent dogs. The only thing that would keep them from earning something quickly is their stubbornness. (a lot like me! haha.) They require a strong, dominant trainer. If you can be this, you'll have a great dog. Just like any other breed.
The only reason we did not end up with a Shiba, but a German Shepherd instead is because of one key feature. Aggressiveness. Obviously it depends on how much you socialize the dog. Any dog can become aggressive if put in the wrong environment, however, all the breeders we talked to said the same thing- they had to keep their females separated. Now, I'm not saying that all Shiba's are this way, but we didn't want to take the chance of having a puppy grow up, and fight to the death with out other female dog. If it was just our male, then we probably would have gotten one.
They are absolutely gorgeous dogs, (love their tails!) but you must make sure you can handle one! But like I said, i haven't had any experience with one, just a lot of research. I hope everything works out great for you and your dog!! If you're still looking, don't forget to look at other breeds as well. I was very close minded when looking for a dog. I feel I could have made a better decision if I had looked at all my choices. Good luck!!