While Google Voice technically supports SMS/MMS, I do not have the app installed on my phone. The reason for this is unreliability. Any SMS messages sent to my Google Voice number will forward to my Gmail address. This makes communicating with this number inconvenient as it will not support responses.
My cellular phone number is private, however – I do have an MMS/SMS option with my tablet. Keep in mind that my tablet will not be in my pocket, so responses are likely not going to be immediate. If you are willing to accept this, you can send me SMS/MMS messages to +14125832753.