Finally getting around to trying this out today. Can't bother with my local AT&T store anymore because they know I'm always up to something and refuse to help me. Going to go nab a Net10 or H2O SIM and try to activate the ICCID with this plan. Will report back.
EDIT: Went and picked up a Red Pocket Mobile microSIM, bought a 3GB package, and I'm rocking and rolling. Damn nice. $30 without tax for HSPA+15 versus $45 plus tax on Straight Talk for HSPA+:10. Looking into SIP clients next!
Thanks for the assist!
Credits to mustangboy88
Google Nexus S 4G
Samsung Galaxy Tab 10.1 Grey Wifi 32GB
"Personally, I watched my friends vivid get updated to ice cream sandwich last night. It broke my heart because he got it via ota, before my nexus s. Official google/sprint ics is something my ns4g will most likely never receive. Yes, I am a cry baby. Flame me."