Downside of fitting them is the drivers mirror view is half taken up by your elbow. Solution if you have a full screen (Fairborne or MMC) is screen mounted central mirror so you have a view immediately behind. Melvyn Rutter do one here.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone