I've added this to my five door recently too.
The front door handles (not delocked) came from a different guy, not Mr Rabbity and have worked a treat as I was fed up of the bloody trigger. Ordered them before chrimbo, and just two weeks ago ordered rear ones, but that same guy isn't selling them anymore so ordered from the rabbity geezer. They took a week to arrive but have out them on and they work fine too.
Haribo - The only thing i've noticed was that the bolt to attach them to the door is a fraction too long. So when you bolt it up tight it must be touching the handle mechanism, as when you fractionally loosen it the door works fine. What I did was use the washer that came with the new handle and the washer from the original door handle, and nip them up tight - no loose movement and the correct free handle movement to open the door.
Silkyballs - Mr Rabbitty usually has an ad for a pair of delocked handles for £30 doesn't he? Can't find it on Ebay at the mo so maybe he hasn't got any in stock and just sent you those to keep you quiet - not very good business accumen.