My point was that the 3.33x5 trick won't give you a feel for the equivalence (unless you're cropping your images to this orientation) because the extra height in landscape orientation and extra width in portrait makes such a large change in how the space feels.I just added more info to the post you just quoted... the 3.33x5 trick was just to get a feel for the equivalence of lenses, not to make final decisions.
Honestly, I don't think you can make any meaningful exact mm equivalents between 35mm and LF for those who have not worked in both formats because of this. I usually just talk about it in terms of "normal", "slightly wide", "really wide", etc. for those who are just learning.
I've bought and sold way too much LF gear getting to where I want to be, I was just hoping to steer you away from some theoretical pitfalls I suffered when starting out.
edit to try and make myself more clear: I don't think a photographer coming up to a scene with a 35mm camera and 24mm lens would make the same photograph if he were using a 4x5 and 75mm lens. He would respond differently to the space with a 35/24mm than a 4x5/75mm.