My biggest concern is seeing an "email" where my text messages. I get text messages all the time, and they're usually pretty high on my list of important messages because I know that 100% of my text messages are definitely not spam and that i should at least read them. Using email to send me a text only makes me think i got spam and i'll just delete the message, i probably won't even read it.

But really, why email their number when you can just message them for their email (or using gvoice or something similar)?