yes , i had the reverse camera fitted and front & rear parking sensors ,, i am well chuffed with the whole package , the reverse camera is barley noticeable ,in fact you have to bend down and really look to see it at all ,,, the screen comes up with the red and yellow guide lines that turn with the steering wheel as to show you where you will end up ....
the parking sensors have the same display bars as factory fitted and look totally stock .the only difference is in my e320 i can switch off the sensors with a button by the gear stick ,not sure if slk's have a button to turn them off ???
i can fully recommend the chap who installed them , i watched the whole process and he was very professional and neat and careful.
all work is covered with a 1 year parts and labour warranty as well and the prices are very reasonable compared to all the other places i had quotes from ...
i will be using him very soon to install heated seats and a crash /security camera system with hard drive and wifi to my slk ...
he name is Neil from " Vehicle Installation Solutions " based in Sutton Coldfield and the contact number is 07969 585 292 ...