If Capaldi weren't doing the Time Warp and flashing the red lining, his outfit wouldn't look far off the drab dark gear that dominates London these days. He'd look less conspicuous there than Matt's tweedy garb, I'd suggest.
I'm wearing flannels without cuffs today. They hang fine. But I prefer only a shiver of break and a slimmer trou, so it all fits together.
I like cuffs on others, just prefer the sleeker look for myself.
Cuffs, like patch pockets, are optional details that add a casual note to an outfit. They're inappropriate in certain settings, but their absence is never wrong ... except on the clothing forums.Cuffs aren't even that popular in the UK, the country that gave us so many of the rules SF likes to fret about.
You're unlikely to find Blue Label at $700 retail, especially at a small shop. It would have had to have sat there for many years, considering the current MSRP. I wouldn't bother with any of the lesser diffusion stuff.
If you're worried about being the only one in a coat, I'd start with solids (the blazers you have) or cloths that resolve as solid -- donegal, barleycorn, etc. Versatile and less conspicuous than the dramatic/theatrical numbers SF favors.