-Edges of saddle have no padding or leather wrapped around, leaving edges sharp. If my legs graze the saddle (I tend to keep my knees close together when pedaling), which doesn't happen often, instead of rubbing against soft fabric, they rub against sharp/brittle carbon/plastic/whatever.
-Even though my sit bones have a comfortable place, the back of the saddle seems a bit narrower or a bit more round/less flat. It feels like I have a couple comfortable spots, but less flat area to slide around than the Carbonio. I wonder whether on a longer ride (50-60+ miles) this would be more wearing. Also the padding that is there is less plush than the Carbonio by a small amount.
It's a tradeoff because I do think it relieves some pressure on the soft regions, but gives me less comfort on the sit bones and fewer positions. I'm going to ride it for longer rides and give it a few weeks before making up my mind. Hope this helps.
Exactly that is the reason why I commented on your saddle.
I used to ride on an older type Fizik Pavé. That's the saddle that came with the bike and I rode that bike just like that for years without asking more questions.
Some years ago, when I did upgrade my bike from 9 to 10 speed, and changed pedals, I had to remove the seatpost to transport the bike to the workshop, I probably put the saddle higher that the usual, also, anyway I rode like that without questioning, but I was having pressure, numbing and pain problems that I chose to ignore.
Bad decision, I developed a strong pudendal nerve imflammation, to the point I couldn't ride or even seat on a chair for longer times, I went to the doctor, he strictely forbid me to ride. which I did, so I lost a full season. no road bike, no commuting, nothing, and sitting on a inflatable donnut at work.
After I started to ride again I went extreme and got the largest cutout saddle of that time, the just new Selle Italia SLC, rode with that large cutout and the saddle very tilted down, but it was a bad experience, as you describe, the edges of the cutout seemed to dig into and the contact patch was somewhat small, also when I went down on the drops the front edge of the cutout made preassure anyway so I went numb ater riding a while on that fixed position.
I was doing it wrong. I was just bending and tilting the torso forward to get low, and doing so I was crushing my genitals into the saddle and pushing down on soft tissue, with the large cutout that is somewhat minimized but still wrong, as your genitals tend to be "cupped-in" the hole and you have still the pressure in the edges.
Later, after receiving very good advice from racers, and experienced riders, I learned the right way to do things.
I learned to "sit right" on the saddle, like racers do, that is, I found a flatter saddle, set it up lower and level, and placed my seabones on that flatter area, while keeping the lower back the most perpendicular to the saddle, curve the upper back to get low. In this way you keep your genitals and soft tissues without preassure and you distribute the pressure on a larger flatter area on the saddle.
I haven't had problems since.
I still use a cutout saddle, the SLK which I like, because anyway due to fatigue I could do it wrong at some point in the ride. but I can ride on a non cutout SLR or flite with no problems or numbing anymore.