If you have been using an ergonomic mechanical keyboard for more than year, let us know which keyboard it is, and whether you plan to keep to keep using it for at least another year or if there's another keyboard you are considering trying instead.
I've been using my bad wings (v1) for over a year, and I didn't think I'd ever give it up. It's a 36-key mono-body split with a cirque track pad in the middle, and I use it with a miryoku layout. I used it as my only board for several months after I first built it, but I was constantly using it for travel and project computers (it's perfect for tinkering with raspberry pis), so I put another board at my desktop computer and now my bad wings goes wherever I go for my laptop, or hot-desking, or projects, or anything else. I've even used the track pad on it as my only mouse for days at a time.
I recently bought a bad wings 2 as a back up and so that I could convert my first one to wireless with ZMK. All in all, it's been a fantastic board for me, and I'll definitely be using it for the foreseeable future.