In our practical course about modern cloning methods, we performed point mutations on a promotor via site-directed mutagenesis. As far as I understand that method you need forward and reverse primers with a partial overlapping sequence to perform point mutations. For deletion and insertion you need forward and reverse primers with a back-to-back orientation. In the practical course, we already performed that step of the mutation. However, after taking a closer look via CLC workbench where we performed that reaction in silico, I saw that our used primers had no overlapping sequences. Instead our forward and reverse primers had a back-to-back orientation. Our mutation did work out.
Therefore, I was thinking that point mutation via SDM is also possible with back-to-back primers. However, I did not find any source that can prove that theory of mine. So I am hoping that someone with more experience than I have, could help me out.