I can't see how step forward at 45 degrees would work when someone is comming in at you with straight blast. If someone comes in with a proper straight blast it's because they have gotten inside and now they are rushing you. It is to close and to quick to step in and successfullly avoid getting hit. On the other hand side stepping 90 degrees or cut 45 degrees to the back would work great.

I've never tried cut stepping in 45 while someone straight blast me, but I just can't see it working aswell as side step or back step 45.
"Poor is the pupil who
does not surpass his
master" - Leonardo Da