roof rack or external rollcage

Perhaps i could pose a future addition tomy derfender 90 county hardtop.
A friend of mine has added an exteranl roll cage to his 110,for reasons of safety and the ability to act as a roof rack as well.
i have toyed with this idea,but have had advise that it will give a higher weight and possible alter the behaviuor of my truck.
So i hav looked at a decent roof rack.The costs are very similar with no real safety to the roof structure.
So what are peoples thoughts ,which way would you go.
My truck is s minter sio i will be keeping it for several years,so while i am not using it for anything off road or camping etc at the moment i probably will in the future

Frankly if, "so while i am not using it for anything off road or camping etc at the moment i probably will in the future" why bother with either till you do decide to go off-road/camping? Either are extra weight high up, just where you don't really want it.

For me, green-laning and off-roading are becoming more important and more extreme so I'd go roll-cage. I don't plan big overland trips and see a roofrack as a means to burn more money in fuel .. though as you're pushing a brick through the air anyway I have no clue how much extra it'd be!

I see no reason to be unduly concerned about the roof safety any more than any other road vehicle, and I certainly wouldn't give it much thought, especially if I weren't planning to go off-road ..

A roofrack might be beneficial if you're always, or regularly, fully loaded and still want or need more space, if not I'd keep away from them.

thanks for the reply another view seems to clarify things better,taken on board cheers

A roof rack will not save your life if you go over