Hmmm...two weeks passed with absolutely no responses on the subject of how Sprint Direct Connect is doing. There was this one not-too-favorable comment on SDC elsewhere on PhoneScoop by someone posting a review of their Motorola Admiral phone:

"-Occasionally PTT service does not work after loss of cell service when going into a parking garage or similar. Sometimes takes up to 15min for PTT service to return.
"
http://www.phonescoop.com/phones/user_reviews.php?ph ... »

Doesn't bode well for Sprint Direct Connect.