Well, like others have said, you will have to follow the beating path. There's some exceptions I am sure, but they aren't in traditionally conservative sciences like physics. I know some people have become full professors at a very young age, but not in the natural sciences, and often people frowned upon it.
If they really make you a professor without postdocs, you may headline 'youngest professor appointed', etc. And then people in all labs doing similar research will talk about you because they made you professor without having done much/having been a postdoc/being so young. Not about your work.
In the end what matters a lot today is how much money you can gather to do research. If you do research in a novel topic a certain university is very interested in and you already have the money, they may make you a full professor.I know that in my degree, 2% of the people become full professors. And apparently that's a really high number. What is the age a person usually becomes a professor? About 40 to 45?
That's the track you can expect, kinda, for becoming a professor. It will differ in different countries and in different fields. And any variance will be more likely towards the negative side than towards the positive.
Even if you are seen in your institution as a rising star and potential professor, they want you to go out and get experience at other labs/countries before you return to become a professor.
There is a reason postdocs exist. I mean, they aren't the hottest thing to talk about, right. Also, you don't put someone untested in charge of a whole lab. You want someone who was been around, seen what works and what doesn't, published stuff, supervised students and copromoted PhD students.
You don't make someone you just hired the CEO of the whole company. In a sense, a professor is a mini-CEO.
I am in a similar position. I want to become a professor. If there's some paper I have to sign right now so I will become a professor at age 45, Ill sign it right now.
But do I want to be someone who goes down the whole process to become a professor? I am not so sure. Do I want to sign up for the 2% chance of becoming one? Well, what makes up the other 98%?
And I concur, if you are unwilling to do postdocs and play it safe, stay where you are and take no risks, you aren't likely to become a professor as your competitors will be willing.