Hmmm, I imagine it'd walk in a similar slow, sinister gait to the original Alien when it's got prey cornered. When it's being super sneaky, I can picture it climbing and jumping around walls/ceilings like those tongue-dudes from Resident Evil.
Btw, it's a concept for my next big make-up/body paint experiment. I'm learning about making prosthetics and really want to craft some scary monsters for a photo shoot.