Before I hit the pillow tonight I thought I'd share my experiences fixing Granitoker 60x30 "metalwood" tiles.
These have also just been taken on by Topps - called "Mood" tiles at approx £60/sqm.

First off they are on the face of it, a quality rectified Italian porcelain.
Glazed with a heavy directional textured glaze.

I have recently had a big moan about a nightmare couple of weeks on a bathroom install involving these tiles so now it's finally to bed here's what I know.....

Fairly easy to dry cut lengthways along the glaze "grain".
110% Impossible to dry cut widthways acros the grain.
Wet cutting is a barrel of laughs. I have Montolit blades for every occasion and I tried 'em all.
Cut slow and VERY steady, they are so brittle they will shatter if you so much as breath on them while cutting.
You will notice that the usual gap created by the saw blade closes up (see the tension) behind the blade, as if these are made of rubber - they aren't!
Completely forget about plunge cutting - 1 cut, 2 cut, 3 cut 4 c...."ahhh sh1t!!!!!!!!"

I tiled a well-made box (I made it) housing a gerberit concealed cistern.
The tile behind the toilet had a cut-out (water jet) for the toilet pipes.
Good stable timbers, fixed using fastflex onto 12mm primed plasterboard. Grouted 3 days after fixing.
No stress from the toilet pan at all on the tile and yet it split! A hairline crack.
After talking with the tile shop and Granitoker rep I decided against attempting a replacement.
They admitted previous "issues" with these tiles cracking themselves after cutting, and even before being fixed.

Just a heads-up now that Topps have them, we may see more of them.
My suggestion would be, plan the layout VERY carefully, only fix to solid surfaces - no box work.
Plan so that cut-outs are as central to the tile as possible - well away from the edges.
Price for wet cutting every cut with water jet cuts for cut outs.

If anyone disagrees with my findings, please voice up! I'd love to know where I've gone wrong coz guess what job I start tomorrow?

27sqm of the same damn tiles - thankyou Topps Approved Fitter scheme!
I must be mad.......

wishing you better luck with these tiles this time around GD .

i cant say i have uised these tiles but i have used by your description something very similar, next all used to have 300x600 with a wood grain effect on them but never experienced anyt8ing like you have they were a pain but not that bad

FALSE ALARM!!!

Used these again today and they are absolutely fine - cut just as you would like.
Must have been a batch fault with the last lot - never mind an "issue"!!!

(I'll still test cut before I commit to a quote in future though)