I haven't seen them in Paris, but may have seen them at Liberty's, I think? Just check their website for stockists, I'm sure something nearby will show up. My luxury department store that sells them is owned by the Selfridges group so assuming there's some overlap somewhere.
Jan 17th definitely too early for me, I'll get booking my own dates.
I need to rewatch that karenbritchick video to find out what company that woman was working for that made the coats. I think it's just coated and taped up gabardine with a print, rather than actual tweed. I couldn't figure out if she was purposefully wearing it inside out (seems a bit of a streetwear trend here) or that it was purposefully designed like that.
OT, I like Karen a lot but her disclosure when something is an ad pisses me off, she's had a couple of videos where you're not aware an entire section or the entirety of it is sponsored until you're too far in.