I was thinking about building one of those ( in the pic.) but I figured that my pigeons would prefer 12 cubic ft of air space, per pigeon, and I could get that, and more (more space the better) by building a rectangle box, with 3 sections.
Plus, I'm not too fancy, neither are my pigeons!

I have an old cable spool (acts as a table- landing board) in front of the loft, plus I can use it as a work platform when needed.
Mine is 4x8x4 ft. with 3 sections.
Pretty basic, easy to build, easy to move.
I could always build another loft, and use this as a breeding loft, or take the sections out, and use it as a kit box type of loft.
It's a pretty versitile shape to work with.
I didn't want to keep too many pigeons, I only have 6, as a backyard hobby, and it works for me.

I don't have to walk on any mess, just lean in, and scrape into a bucket, and close it up. I do that when they are out flying.