One of the things that bothers me about TPMSs is that the bike has to be in motion in order for any pressure readings to come up. Once I'm rolling, I'm rolling, I am not interested in coming back to put air in the tires once the ride has started. The gadget that started this thread appears to remove some of that annoyance. As far as knowing what the pressure of the tires are while I'm in motion: I suspect a significant loss of air will be pretty obvious, without the help of a monitor (not that this has happened to me yet).
Mock me if you wish, but I check the tire pressures every day. I used to check them before every leg of the daily commute, but have gotten lazy. Getting a gauge on the front tires of these beasts is not helping matters. I am hoping the tires wear out soon so I have an excuse to buy the angled stems.
Once a system is developed that can tell me the tire pressure while the bike is sitting in the garage, next to my compressor, I'll bite. Until then, I'll be kneeling, grunting and cursing... but fully aware of my tire pressure before the ride starts.
Thanks for letting me post ho' my way farther out of FNG status