My experience in this airport consists of picking people up before a Vegas excursion, or dropping people off after such. The approach to this airport is not too bad, I did not see the same traffic I run into at LAX. The pathways will twist and turn in interesting patterns, but the place does not feel too much like a labyrinth. It takes me less than 20 minutes to get in and out of this place.
From what friends and family have told me, the experience of flying in and out of this airport is not too bad. Just show up at the standard time (2 hours before your flight departs) and you're fine. Everything else you'll find here is more or less standard airport fare.
Flying in is a great option for Vegas. I just never do because I like to drive, and the drive back to LA is a nice relaxing time.