I have a F45s Black 3 meter on my mid roof, i've only used it a few times as I'm still building my camper.
It a little long on the LWB midroof, but it still looks ok.
I'm quite happy with it, its winded out and pegged in a minute, or thereabouts
I agree with others that you need the tie downs, as it wouldn't take to much to lift it and destroy it.
Ill be grabbing a centre curved bar in the near future, to reduce water/dew pooling in the centre.
Although, Im getting it refitted in a few weeks as it is out by 20mm (first installer used a spirt level
, instead of measuring of a straight edge) and once thats done, ill fit the rain guard.