Fuck that!! Pick em up! You can do it. I just had a great Pick Up this morning at work. Gorgeous girl. We are going out either tonite, or sometime next week. She said.... "I can already tell we are gonna be trouble." It was fucking smooth.... I meet sooooo many people through my work place its ridiculous. You may never see them again anyway. Just do not pick up co-workers. Customers... thats a whole other story.
I believe you will meet a better class of person at your workplace than you will at a bar. You may meet the same person at a bar, but its a completely different setting, and they may be more accepting of your advances in your store than in a bar. You wont come off creepy if you are smooth about it.
At the end of your good conversation just say, " Its been great talking with you, whats the best way we can stay in touch?" (credit: afc adam) or "I have really enjoyed this conversation, what's your number so we can continue this later?" Is that creepy?
CK