In theory the spring should stay attached, as I tensioned it up good and proper. It’s as much about giving it that cafe racer look as it is for protection. I really don’t plan on finding out how effective it will be. 
The bar ends were “modified by me”. They needed to be machined down to fit the handlebars. I will more than likely put the handguards back on to offer more protection to the levers. I did some testing by laying the bike down on the driveway, to see what parts would rub, in the event of an accident. The levers may catch the road/track/carpark under certain circumstances. I think most of my falling off will be at slow speed whilst trying to master stunts.