If you are still holding the tang of the blade not at all, this is how you would have to do it if it was a Kamisori.
If you are holding only the scales I would get out of that part of the habit.......
The traditional grip would be great if your hand articulated and rotated like an industrial robot but it does not.
There are many accepted grips and quite a few safe and effective grips out there that I am sure not everyone knows about me included.
The critical part is having control of the blade, if you have a sound grip on it and are able to move the blade across your face in the proper way
ie. not a slicing motion it is as orthodox as it needs to be.
Here is a link to the Wiki with a few and if you note at the top of the page
"This list is not complete and can be fulfil by each user. Each of us has our own best ways to shave with straight and many grips have different variations. Best way to find out what works for you is to try and practice." (and yes the misspelling is a direct quote)
http://straightrazorpalace.com/srpwi...straight_razor