Thanks for all the feedback and comments, I understand the risks but a couple of our regular venues have made changes to layouts due to covid that will make cable runs more difficult to where we will now have to operate from. The bike rallies we do are in remote fields so less concerned there. Our get ins / outs are always time restricted as well meaning putting straps round pillars etc to support cables is not that practical. These are a dedicated transmitter and receiver based system, my main concern is if you need the charger or whether they can be powered in use, I guess if nobody here has used them we will have to buy a pair and try them out.