I haven't. I've asked for some prices for a handful of build options.
It's now between the Aeris and Meta AM V4, but the Meta is always going to be an unknown quantity, since I've only been able to pootle around a car park on one, and if I'm honest the width at the back (chainstay vs heels) is a bit of a concern...that said, I never experienced anything like that round the car park, but admittedly that's a different thing altogether.
The meta does seem to have slightly nicer bits on it, for arguably cheaper. (Except I want the most expensive one), but having met both Ben and Dave I'd be happy to buy a bike from them; they were both lovely people.
I did love it, though, except for the brake levers - I'd go for Guide RS... or maybe the Shimano Zee ones, but no idea what they're like... but that'd give me 4 clamps on my bars instead of 3 if I stuck with Sram. Does that matter? Probably not.
I couldn't complain about the stopping power of the Guides, though... and the modulation is mmmmm. Way better than I'm used to, either. It just took too much lever movement to get them to do anything, and that's about all I didn't like.
Anyone used Zee ?