Hey kuatto,
I've had them in 3-4 times in the last 6 months. People tend to scan over the invert tanks and miss tons of goodies. 
I've had Sexy Shrimp: 
Thor amboinensis, and
Bumblebee Shrimps: 
Gnathophyllum americanum
For a few weeks now.
I also had a pair of 
Periclemenes brevicarpalis  Sold now 
 
 and regularly have 2-3 varieties of Pistol Shrimp 
Alpheus sp.
I'd encourage many of you to look a little longer in your LFS invert tanks you might find some surprises. 
