If you are referring the the Goodwood Green BA in the above picture that is mine. I'm pretty sure that wasn't the bike you saw. I live in SoCal. But if I came out of a store and found you ogling over my bike I can assure you that I would stand there and B.S. with you for hours. When I'm riding there are no time constraints. I would let you sit on it and I have been known to let fellow riders take her for a spin.
Now...for those of you who want to know the riding characteristics of upsizing to a 21" wheel. You have to use an BA or Tbird front hub, They are the same. The wheel is not an off the shelf item due to the odd number of spokes. My front wheel was laced(measured for offset and spacing of the spokes) up by MC Tire Works in Lomita CA. I lowered the front forks 1 1/2" to compensate the added height of the wheel. Add the 1/2" less sidewall height of the front tire over stock and the bike has been lowered a total of 2 inches. The rear was lowered with shorter shocks with the right spring rate and a low profile 200 rear tire.
The bike handles better than stock. I'm sure you will have doubts like I did. Maybe I'm used to it now. But I feel just as safe and in control as when mine was stock.
Cheers!!

Doug