I have mixed feelings about Clear.
I was doing work for a company that was using Clear at it's stores, and Comcast at the server. The stores would have to VPN to use a thin client that was on the server as their "point of sale" software. It seemed that when the signal started to get worse, things started becoming hit-and-miss. For example, the RDP printing protocol would sometimes drop off, this kept them from printing from the server to their local printer. So keep in mind that just having a modem right next to your computer and not needing a wire into the wall might seem cool, the modem's performance seems very reliant on how good of a signal it can achieve. Depending on your area, getting a good signal might be a bit of a challenge.
I should add that we don't know for sure if it was the signal strength or the way the NAT worked on the Clear network that caused the issue (Although, if it were an NAT issue, you'd think the VPN would take care of that problem). All we knew is that when we switched the stores to Comcast, the problems went away.
On the other hand, it's an extremely cool concept. You might not get the same speed as a cable connection, but the ability to move around and put the modem where you wish without a wire to the wall is pretty neat. As a home user just using it for gaming and web browsing it very well could work perfectly and perhaps even better than Comcast since it might not be as congested.
Out of curiosity, what were your reasons for wanting to switch?
