With a good blade in an angle grinder following your scribe should give you the cut you want with a grout margin ..( as quoted by others)
Just run through carefully and lightly
Good luck
Ask topps if you can take it out for a test run... Return if pants and change for a Rubi (which have been tried and tested)... My cutter of choice..although I am informed by trusted members on this site that the sigma is King!Lol
Has been years since I have used my wet wheel...4 1/2" grinder with good quality blade all day long... Once you get used to it ... So much time saved with equal results :confused:
Try scoring and moving tile away from stop end so that the breaking point is not so far into the tile.. Also with a thinner ceramic go gently gently... Keep practising.. Good luck.