I haven't had my packer for long. When i do use it, its usually for my own.. uh.. satisfaction lol. I don't always pass, so I feel a little nervous about packing because I don't want to look like a chick with a dick. Plus the packer is uncomfortable to me, and it moves around too much, even with a harness. Sometimes I'm tempted to glue it on.
BUt to answer your question. I don't know if you are gay, but I am and I tend to look at guys crotches, and FOR THE MOST PART I can never see their bulge, but it doesn't make me think they aren't a guy, it just makes me think that they are a grower rather then a sho-wer.