While I'm not completely comfortable with an OTA update, I like the idea. I have a Wizard and HTC & the Carriers pretty much indicated they had no interest in providing us any major upgrades. HP did the same thing with the iPaq line a while back and lost a customer. It would take an awful lot to get me to use another HP PDA just because they decided it wasn't worth the time/money to support a device barely one year old. Don't even mention those who had just bought a device one month prior.
I appreciate the ROM cookers just because we do get to extend the life of our device beyond what the carriers would want. I can't really justify plunking down $200-$400+ every time I want the newest OS. I don't do it with my PC (despite the cost of Vista) and don't like the idea of needing to buy new hardware just to get a new OS. It's not about drivers - we've pretty much proven that. It's about profit. However, I think they'd get more profit by releasing updates and charging a small fee for them rather than trying to milk us for the cost of a new device.
Add in the fact that if I weren't already a customer I could get a new PDA for virtually nothing as opposed to the premium I pay for already being a customer and it's just insulting. I know that there are deals out there now to get a new AT&T Tilt for < $150. I, as a customer, need to cough up at least $150 just to get a refurb unit.
Now, I realize that there is the overhead of developing and supporting new OS versions customized for your service. However, I think that the ROM cookers improve the process greatly by getting rid of so much of the junk the carriers put in and also by taking some of the great freeware developed for WM and bundling it into the ROM itself. That saves us space later because we don't have to install it. It also provides some great functionality out of the box. This is something that the carriers really can't do because they'd be forced to provide some form of support for that software. Getting a cooked ROM, we take on the risks for having that software installed and using it, much the same as if we had installed it ourselves.
I really like the idea of being able to update without being connected, especially with those trying to update using a Vista machine. However, I'll also be a little scared of trying this out just because it could brick my device and getting it back isn't a trivial task if it's even possible. Still, I hope that the cookers aren't completely shut down. They provide a valuable service that we, as valid customers, can't get elsewhere. I look forward to following the progress of this service - it looks interesting and I may actually give it a try at some point when I'm feeling adventurous.