Aftermarket TPMS - Compatability

I have been doing some research on the TPMS and was wondering if anyone knows of any aftermarket devices that can display all 4/5 tire pressure and temperature on a gauge using the stock Toyota Sensors or connection to the ODBII port? I looked into the 2 aftermarket TPMS systems on tirerack, but they come with the sensors, and I am not sure that the module could be programmed to read my existing sensors.

I also looked at the scangaugeII, but couldn't find any tire pressure features - although I would have to assume that the ECU stores this from the sensors and default TPMS??

Any thoughts?

Thanks!
Drew