I look at it quite differently. It's all about pleasure and efficiency. I don't race - I hate training. I just want to cruise quite fast without trying uncomfortably hard or wasting effort. I had some standard Lightweights years ago. They were 55mm deep I think. They give you such a boost that when you're riding with other people you have to keep freewheeling to stay with them. It's hilarious. I reckon they give you a similar advantage to an e-bike. But without the weight to drag up hills. They were stolen and I've been mourning them terribly for years. So I decided to cash in some of my pension and replace them. I was going to get another standard pair but I saw these advertised and was seduced. They're so extreme....£4600 new in Europe. Just mad really. But you only live once. They were pretty much new but the guy took £2100 for them. He was probably struggling to find a buyer. They'd just been replaced by Lightweight with a more aero model, and they're for tubs and rim brakes.
As for punctures, sealant sorts them unless you're very unlucky, and it's quicker to fit a spare tub than it is to mend a puncture in an inner tube.
