What @avdave2 said. You’ll probably be OK.
The cloverleaf and figure-of-8 cables have the same power rating (2.5A) so you’re OK on that score. But as you know the cloverleaf a) is also earthed and b) polarised. The million dollar question is, does this matter?
An appliance like a TV probably doesn’t need an earth, it’s encased in plastic for a start and if your home wiring is anything approaching modern then you’ll be protected by an RCD or something similar which will trip near-instantaneously if there’s a sudden anomaly in the current flow (because it’s arced through a small child or something).
Similar with reversing the polarity (of the neutron flow). The power supply probably doesn’t care (it’s AC after all), just look at international travel adapters. Getting live / neutral wiring the right way round is critical in the mains wall socket because if it’s wrong and the fuse in the plug goes pop then it won’t isolate the live circuit; but transposing them after the fuse shouldn’t make a difference safety wise that I can immediately see.
I’ve got to wonder though, with so many probables and 230V kicking about, if your primary concern is simply one of aesthetics then in lieu of chasing it into the wall / floor / shelf properly why don’t you just install ducting? You can get self-adhesive stuff that’s barely wider than a mains cable and will look a buttload better than daisy-chaining fifteen different cable types together.