Ha ha , like minds, Bostons and socks is indeed where I ended up!!! I'd forgotten that was an option when I was getting dressed, even though I spent the weekend in socks with Birkenstock "zermatt's", so it wasn't exactly a particularly hard reach!
I bought mine last year and the cork is fine, but I don't wear them in the rain unless it's a light sprinkle and likely to not get in the shoe. I agree it feels far too early for boots, especially as the sun is out.
Thanks re the shop info @Countmeout !