It's fairly heavy, at 18 lbs. My last bike was 16 lbs, and the Supersix has the benefit of those carbon hoops.
Another issue is that I just haven't gotten the fit sorted out. I've gone as far as I can on my own, next is to get a pro fitting done.
The Tarmac has quick-release hubs front and rear, and my local bike shop says only custom built carbon wheels will fit.
idk
So I guess the weight is one issue, fitting another, and then - please forgive me here - I need to convince myself that the Tarmac is cool.