Personally, I don't like them.

They are All-in-2's - not pockets (so similar to Itti Bitti's).
They are fiddly, and not as easy to use as other AI2s and are more expensive than IB's for example. They are also velcro closure, which by the time bubs gets to a certain age they are much easier to take off, hence why snaps are a more used option.
They are OSFM, not sized like IB's which is good so offer value that way, but personally i found Charlotte was only ever in the Med IBs anyway, and way TT by the time we were on to Large sizes.
The Organic OSFM Bum Genius are a similar 'lay/snap in' style are easier to use and are available in snap closure. They are a little more expensive again, but I am happy to pay extra for organic and natural fabrics, over microfibre - which is also not anywhere near as absorbent as other fabrics)

Have a couple, but I would not use them as everyday workhorse nappies, they aren't as purdy as other options available, and DH found them WAY to fiddly to use with the 5 snaps you need to put the main booster in, then another 2 snaps for the other booster in it.

Basically there are far more options out there that tick more boxes and offer better value.