I'm in the process of getting a winter bike, and I was so tempted by the Gunnar Hyper X. It had everything I wanted. Honestly, the reason I didn't do it was it would be too precious to me to keep in my basement, which is a requirement for the new bike. I already have 2 of those kinds of bikes!
I think you'll be really happy with a Gunnar. Which ones are you thinking about?
'02 Eddy Merckx Fuga, Selle An Atomica
'85 Eddy Merckx Professional, Selle An Atomica
'10 Soma Double Cross DC, Selle An Atomica
Slacker on wheels.