They look very similar to the Mountain Buggy but cheaper.
I am looking in depth at a double pushchair as will have a 17 month gap between DD2 and DC3. Although I am keen on the Phil and Ted's, I really can't get my head around the baby being underneath. A baby needs to be shown off! All tucked up in a carrycot. Especially in February.
Yes .... fantastic! Have it for newborn twins although have skimped and not bought the carrycots ... we just put a blanket underneath them for additional padding. As you say, very like the mountain buggy. Easy to push, no problem with going up and down kerbs, good on pavements and we even tried it on forest track and it pushed easily there too, it's not too heavy at 13kg, folds easily but doesn't go through our front door ... and on top of all that, it's very comfortable for the babies! HTH