1) I don't choose a bike to create an impression. I've ridden enough bikes to know which ones I really enjoy being on for the day. Those bikes are the in my stable. I'm always open to broadening my horizons, though.....
2) What do I think when I see one out and about? If it's my size, I wonder if it is for sale.
Could not have said it better except for #2. I catch up, approach the individual and offer to buy or trade. This works more often than you might think.