Merino wool has certainly proved itself over the years as a performance and user friendly natural fabric. It's definitely here to stay.
If you still haven't taken the leap then how about starting off with something small for winter?
Swobo's six panel beanie is a great one for wearing on its own and is thin enough to wear under a helmet. The natural wicking property of the MAPP Merino wool also delays the onset of smells.
The Swobo beanie is a light and effective way of providing extra warmth in a traditional design with a bit of added style.