Id love to know what blades you use to make it “easy cut”
Cheap blades in a stanley knife. Steel rule, run knife down a few times to score, bend to break, trim by hand if necessary (rarely) – the bottom layer is very soft. It’s really not hard to get a very good finish with Karndean/Amtico – I struggle to see how a fitter could screw it up so badly.
One of the big benefits (over wood/tile/etc) is that it’s flexible enough to cope with a bit of movement in the floor. In an old victorian house with undersized joists you end up needing massively thick ply to stop any movement at all (ie enough to stop grout or tiles cracking with ‘hard’ floor) but these floors are fine.
Now you *do* need some skill to get a latex screed flat – we royally screwed that up – but the Karndean over the top, bumpy as hell, coped with 10 years of wear without a problem. On the wooden floors we’ve done since we didn’t have the same problem. If I was doing a concrete floor again I’d have someone properly lay the screed/latex flat but wouldn’t pay someone to lay Karndean