Ahhh. Those are the mirrors that came on my used 2010 XC when I bought it a little over a year ago. Never knew what they were.
I like them a lot too.
Had to replace an adaptor earlier this year when it broke after trying too forcefully to tighten it down. Not sure what it was, but couldn't seem to keep it tight in one place, and this went on for 6 months. After I replaced the adapter and tightened everything down as intended, it hasn't moved since. Other has been solid the whole time.
Only other irritation, which may be true for most or all motorcylce mirrors, is they always seem to be dirty. I could clean them at the start of every day riding and by end of day they would be dirty again.
2010 Victory Cross Country - Black & Chrome
2007 Honda VTX 1300 (Traded up)
2007 Honda VT750 Shadow (Traded up)
25 years without a bike :(
Honda CB 125, 360, & 550 in my youth, late '70s - early '80s