Got up this morning, rescanned my three sets, and was pleased with what I found. The C4 does do high VHF - might not be the best performance but if you got the old analog signals with the C4 this should work for you. We are 60 miles out from the LA towers and have a C4 mounted about 25 feet up with a CM 7777 signal amplifier.
In the LA area our ABC network is channel 7 - the bottom of the DTV range, Fox is channel 11, and we have two independents that are 9 and 13. Prior to the switch my Dish 722 receiver showed channel 7 a 68 to 70 signal strength and after the change we are seeing 64 to 68. We watched it most of last night and found it more stable than before even with the loss of signal strength. Channel 11-Fox has about the same signal level as before the switch. It came in ok this morning but we haven't had a reason to watch it for any length of time so can't vouch for it's stability. Channel 9 was marginal before the switch and still is, but we do get channel 13 now and we didn't get it before.
The one UHF change that was made - channel 60 to 43 - improved the CBS-02 signal strength and gave it much more stability. All the other major networks stayed at the same UHF channels assigned and are coming in with good signal strength and stability.
Overall I am pleased to see that the "will not work with high VHF" folks appear to have been wrong, and I can finally say through personal experience that if anyone is looking for a good compact DTV antenna that works as advertised, this is a good choice.