We all definitely feel for you and a mistake was definitely made, but this is an allocated, limited edition watch that Omega is not likelygoing to be able to simply exchange on demand for you. For the record, they do sometimes do that with their normal production run stuff.
I totally understand the disappointment. No idea if this helps but at least with a warranty claim you are getting your watch back, the one that YOU waited for.
Maybe try asking Omega to expedite the service, or throw in a 3861 bracelet (or a discount)? There's no guarantee that they will do either thing but these watches look fantastic on the 3861 bracelet and it's always nice to have options. Just a couple of thoughts that you might try.
And, Merry Christmas!