If you get a chance, then allways encourage customers to avoid the sheds. They just make life difficult.
I
tile floors differently to most, as i never use spacers on floors now matter what the tiles are. I just run chalklines and work to and from them.
Its harder to begin with, and takes a lot of practise to do this with stuff like rectified porcelain, which when first starting out you should really use spacers for, but its probably easier than spacers for tiles of varying sizes.
Once i learnt to
tile floors without spacers, i never touched them again. My tiling improved massivly, as i was relying on my brain putting the tiles in the right place not a piece of plastic. Sometimes spacers just dont work, so its handy to be able to
tile without them, and once you get used to doing it, its easy anyway.