Nexus 4 Network Identifier

Hi, just made the jump from a Galaxy S III on Sprint to a Nexus 4 on Straight Talk (AT&T Micro Sim). I'm really loving the phone, but just have a quick, stupid question. Is the network identifier always going to say "HOME"? I figured it would have said "STRAIGHT TALK". And also, while I have you here, can anyone share their experiences with AT&T's HSPA network in Las Vegas. I'm going in a little less than 2 weeks and am curious as to what I can expect. THANKS!!!!!