I've got a couple of flat caps and an Inspector Cleuseau hat; and I am an old geezer. They wow my American friends when I put them on with a tweed sports coat, waist coat, and watch-chain with 1899 3-pence fob. They also look good with a golden retriever.
I have 7 flat caps, an Irish tweed sports jacket and I'm an older geezer. Don't have a whippet, but I do have a Shih Tzu. I must say that I much prefer flat caps over the ubiquitous baseball and truckers' caps worn over here.
After some solar skin damage on my baldy heid I seldom venture out without a covering, on Doctor's advice. Don't have a flat cap I fear Nisse, however my favourite head gear is a nicely shaped Breton cap from Nauticalia whivh can be smart or casual depending on whether I'm wearing a windcheater or a reefer jacket. Greatly underestimated in my view, a nice cap/hat you like.
Jaxon's are the cheap end of good hats, I've had a couple from them over the years and they've proved to be very serviceable.
I haven't any experience of the hat in question though.
The only flat cap I own is a Barbour waxed one that I usually wear with a Harris Tweed jacket and Paisley Tootal scarf.
Does that make me an Old Geezer?
I wear my Panama when I walk the dog or when just walking. What I like about this hat is that it fits nicely and is cool. I bought in Nice when I forgot to take my cotton duck sailing hat and I much prefer the Panama. I kind of fancied myself when I strolled along la Promenade des Anglais wearing it.