You can determine what works for you. I've never seen the attraction to laying everything flat in the enclosure if it can fit in Elk's SWG's.
My system evolved from a fully loaded Vista 20P (it was essentially free, less a couple components) which was the defacto panel the company I was working for installed. I had been approached by a person to install a M1 and as "trade" I had the ability to make a 1 time buy with components at half dealer list, so I bought essentially everything in the parts book at the time and installed one, kept one. Mine is running 64 hardwired zones, Elk's GE wireless (fobs) and 3 DBHR's, RB and XOVR's, XSP, XEP's and the like......then had to gut the existing install and mine's in 2 28" cans piped together.
What would fit in a 42" Leviton can would easily fit in a 28" Elk can on SWG's.
I had a lot of trial and error on how to lay out my can, since not many M1's were pictured on the web and I was going from a different topology and install, so cable length was also an issue. Once you see how the M1 installs in a 28" can and the different layers get installed in the can on the SWG's, it makes sense how it all goes together. The key is to wire a section of the panel at a time, then move to the next.
I don't see the real need to look at the silkscreens on the boards or the blinky lights of the data bus. Really not much to see unless you're trying to troubleshoot, and at that point, easy enough to slide boards out of SWG's to view.
Best I would suggest is to look up Elk on Facebook of all places and look at their gallery. Plenty of examples there (I didn't have that luck when I started putting them in). There should be enough there to see the real estate differences in methods.