Pay close attention to the fit video's as these saddles mount very differently.
I have a Carbon seat post on order for my Gravel bike, My stock post has 8mm offset I want 15mm.

My Mountain bike had 15mm offset stock so no need for a change on that bike...

The width Is NOT an Issue, Not Having to deal with a pointed saddle nose damaging me Is Everything !

As for leaning,, You sit forward on the ISM, Your 'Sit Bones' are correctly supported and your 'Boys' are naturally In front of the seat.

I cannot Imagine not being centered on a bike saddle..