We have old skirting radiators inthe ground floor of our hose with normal radiators everywhere else.
In terms of heat the skirting rads are brilliant, but, given their age, they are not the most attractive heaters I've ever seen. They stand about 3 inches proud of the walls, are about 9 inches high and are made of pressed steel. I have seen somewhere on a website some modern ones which appear to simply take the place of normal wooden skirting and are supposed to be just as good as our old version.
If I were starting from scratch with central heating I would certainly consider using the new version.