Which way to mount ARCA style plate to camera.

Just bought a new tripod (Sirui W-2004), and another head (Sirui L-20S).
Anyway, I have always mounted my ARCA plate to the 80D with the plate pointing straight ahead.
This gives a wee bit of the plate protruding out the front and back of the camera body.
No big deal...but I thought that maybe I should mount the plate across ways.
So the longer part of the plate runs along the bottom of the camera.
No wee bit sticking out front and rear, plus maybe the plate is more secure with having the extra grip?
Your thoughts? Do you worry about which way you fit the plate?
The L-20S allows me to mount the quick release clamp either way, so it's a matter of slide the camera in from front/rear, or from either side.
I 'think' the whole setup may be more secure if the plate runs across the bottom of the camera..but happy to be educated about this.
I may also grab an L bracket too one day (probably a SmallRig).
Anything good/bad about L brackets?
Thanks.

Arca-compatible plates with an anti-twist lip along one edge generally put the lip along the long direction of the QR plate.

Without an anti-twist lip, mounting the QR plate so the long side runs parallel to the underside of the camera maximizes the friction between camera bottom and the material on the plate, for more anti-twist for the camera. But putting the plate front-back is the orientation that works better with tripod bases that are provided for many lenses.

The pros and cons of L-brackets: Pros: You can quickly switch between vertical and horizontal orientations without much adjustment on the head. Cons: Takes up more space in the bag.

L-brackets run perpendicular to the lens, different from what you have done.

If you don't need an L-bracket, there are square plates that will let you orient the camera however you like relative to the head (sideways or front/back). As Wilt said, get one with a anti-twist flange. I used to do this so the clamp knob didn't poke me in the face (I didn't like the knob under the lens); The clamp knob was to the side. That was back in the days when my camera was small and lever clamps didn't exist.

I have since switched entirely to RRS lever clamps so the orientation does not matter to me (I won't poke myself in the face with a knob), but now that I use L-brackets, the orientation works only one way.