How wide were the bars before you pruned them? I'm not a big fan of wide bars on MTB's either, but my own old Raleighs don't strike me as overly wide at 23".
Around 26" as supplied. It was like being a kite on a windy day. They are now 22-23" and perfect. They were not the originals, but a new alloy item with the right bend and, crucially, not the original steel bars with the blue/green speckled paintwork that looks so good on the rest of the frame. Those are still in the shed, and will stay there. Painted handlebars - er, no.
Do you get any vibration issues with these? The mirror head looks very similar to what was originally factory-fitted to the wings of my Series 2 Land Rover, and they are very prone to vibrating to the extent all you get is a fuzzy image. I ended up fitting more modern Defender ones.
No issues at all. I've had them on the ebike and commuted about a year with them, and they became indispensible. They don't vibrate at all under normal circumstances, and the 'glass' (probably not glass) gives an optically clear image. I can glance in them and get a very accurate picture of the chasing pack (tractors and 4x4s with the occasikonal MAMIL round here) in a fraction of a second. By contrast, the cheap
Halfords mirror that I had on the MTB before was blurred and fuzzy even on a smooth surface. I've had series Land Rovers and even Defenders, and these mirrors are vastly superior to anything from Lode Lane! I can't recommend them highly enough, and I would have one on the Carlton if it wasn't so much easier to duck your head and glance behind with the drop bars.