I've been riding an I11 for 9 months and love it. I use it for commuting, and I'm a pretty tough judge of bikes. My "other" bike is a Pinarello Dogma that gets about 4,000 miles per year. Here's my review:

The Good:
-Great geometry which finds the right balance of comfort and aggressiveness
-The 11-speed internal is smooth and reliable. No complaints.
-The hydraulic brakes are amazing. Smooth and precise. I wish I had them on my road bike...
-The carbon fork is excellent at road dampening. Sometimes I forget there isn't a front shock absorber

My only Complaint:
-It's heavy to carry. I carry it up my outdoor basement steps and feel the weight. The rear hub is heavy, which back weights the bike.

My Advice:

Buy it. It's really a great value, and it looks cool.