Thanks for the feedback fellas; yeah, I can see what you both mean. If I'm really honest, part of the reason I wear polos with jackets in summer is the same reason I wear turtlenecks with them in winter: it saves me having to iron a shirt at the end of the week! But if I'm going to wear solid polos - and all my polos are solids - under a jacket, I should probably pair them with something patterned elsewhere, to break it all up a bit, especially at weekends.
I like that cheekiness. Nice fit, too. BTW, you don't necessarily need a tripod for full shots; a handy shelf or window ledge or similar works just fit (although depending on its height, can introduce some distortions.
AAS - great casual fit. I don't even mind the boat shoes with it.
More or less casual today, although I was working: