Can ADS-B provide position information for Search and Rescue?

Trig says the TN72 ($359) and TA70 antenna ($345) will start shipping second quarter of this year. Because I usually fly in busy airspace near New York City, and I rarely fly competitions or with a dozen other gliders, I'm leaning toward this rather than Powerflarm.

My partners and I have just installed an ADS-B out system in our Grumman Cheetah -- a Garmin GTX 335 transponder with associated WAAS antenna. For ADS-B in we are experimenting with an SDR (software defined radio) USB dongle connected to an 8" android tablet running the free Avare app. Avare requires the addition of a second app, Avare ADS-B Pro, which tunes the SDR allowing you to toggle between 1090 and 978 and has a hefty $2.99 price tag. The SDR dongle with included antenna set us back $15. That's the total cost. It appears to work remarkably well.

It seems like this simple, ridiculously affordable system could work well in a glider using a smaller tablet or phone for a display. However, I don't relish the idea of another screen in the cockpit in addition to my Oudie. I wrote to Naviter to see if they would contemplate software for the Oudie that would allow it to display TIS-B and FIS-B, but haven't heard back....

Are there currently any glider flight computer programs that will display TIS-B?