We have a savannah, Esham. He's a cool guy, but he's no bearded dragon, in terms of behavior! SM care is a lot different than BD care, but it seems that you are willing to do your research about all that..
They are very aggressive animals, so daily handling is very important. We take Esham for walks around the apartment (on his leash, so we don't lose him.. and we have cats!) and he likes to swim in the tub. When he sheds, we leave him alone, other than taking him out for a soak. He's a real butt when he sheds. He doesn't like me, he hisses at me and runs from me, but he has never threatened to bite or attack me. He is not scared of the cats; in fact, they are scared of him. He knows that my SO is his caretaker. Esham is about two feet now and we have had him for about a year and a half.. I think...
Overall, they are good pets, if you are willing to put in the time and effort. I have seen videos on youtube of them climbing humans and sitting in their laps (there are a lot more vids of them eating..). Our Esham will never be that tame, and we understand that. We also know what kind of responsibility he will be at his full-grown size. I look at it like the responsibility of owning a potentially vicious dog.. Esham is not vicious, but he could someday have the ability to take off a finger.. or worse..
One thing that I think is important with SM's is that they over eat. You can feed them and feed them, and they will eat until it is physically impossible to eat more. SM's lives are significantly shorter due to obesity because people don't handle them enough and allow them exercise and most people think its cool to feed them mouse after mouse.. Be sure to find the balance of feeding to keep him healthy, and let him out for walks and long swims in the tub! He's really fun to watch in the tub!