My wife did just that. She prefers the larger keyboard on the LG, and likes the touchscreen as well. You give up some functionality (push e-mail, especially), but it's a nice phone. Just make sure you get software version V05 - it's a new firmware update that improves battery life and browser functionality, among other things. The update takes about 45 minutes at the local store (it's too big for OTA).

BTW, I would highly recommend a screen protector. We put an Invisible Shield on hers, and it works great, without interfering with the touch functions.