No, I checked they can. I'm from England you see, our stores over there aren't reliable, so it's a habit.
I put back on my new socks and boots, and this time played around with the tightness so ti was tight enough to be secure, but not super tight.
Success. But would it be safer to try and make them wearable at full tightness (twin lacing system).
The store is amazing, not much variety but the guys there really know what there talking about.