Weaknesses: Rear brake studs are too close to tire. If you are using V-brakes the top levers (where the cables runs)are only an inch apart. If your brakes wear a bit you'll have to replace them before its time since the top of the lever will touch each other (bottom out). Hope my explaination was clear.
Plan on waiting 3 months for your new frame....Ionic has paint, manufacturing, and scheduling issues.
Bottom Line:
Nice frame if your willing to wait 3 months for delivery and don't mind changing your rear brake pads when only half worn.