I am now a Bird owner (thanks to @ian91 ), and this was my rationale in buying it. Price is recoverable in resale. My impressions are in the Traillii thread, but in short if you can afford to try it, I think you have to give it a go. After you stop analysiing the Bird, you just melt into the music. I have never had an IEM which is so damn listenable. It makes the Odin seem like a tuning mess. Unfortunately I am probably going to keep the damn things.
I don't know how you'd like it versus DD timbre across the FQ range though.
It's just a very well executed IEM when taken as a sum of its parts. Personally, I did have small, lingering issues with lack of DD timbre in lower frequencies (this seems crucial for my enjoyment), but the picture it paints across the range is totally coherent and the BA bass strikes a masterful balance between BA / DD characteristics.