Any experience with Gemini tiles

[Lily7050]

This tiles www.ctdtiles.co.uk/gemini-tiles/marmori/p-7884-marmori-calacatta-white-matt-tile-600x600mm.aspx feel like the least slipper out of matt marble effect tiles we saw.
We wanted to lay the matt tiles on the floor and the matching gloss but larger size tiles on the walls in our bathroom www.ctdtiles.co.uk/gemini-tiles/marmori/p-7846-marmori-calacatta-white-lappato-tile-1200x600mm.aspx.
The bathroom is quite small: 1.86 m x 2.12 m and height is 2.36.
Now I am in doubts whether the large gloss tiles will be too large for such a small bathroom.
Our builder said that he does not use Gemini tiles but did not explain yet why.
So I am wondering if anybody here used Gemini tiles and what is you impression?
Just trying to guess what might be the problem before talking to the builder. Are they difficult to cut or there are any other issues?

TIA

I would go for 600 x 300 sizing as there will be less risk of breaking and plus you can achieve some nice grout lines. I have mine vertically stacked so they make the room look taller. I bought very similar style from Marren Tiles in Grantham. They can deliver to you. They are 8mm porcelain faux marble tiles and are the absolute business.

And I bought matt not gloss so not slippery.