pistol shrimp/randy pair with a blenny in tank - can it work?

[neoh]

I've recently acquired a goby/pistol shrimp pair to be picked up.

However; I have a very slow scooter blenny that scoots along slowly - as they do. I'm not quite sure how these little buggers have been able to live for as long as they do, considering how slow they move.

My big concern is the pistol shrimp and when he scoots on by him. One shot of the pistol and it's game over for the blenny.

Or, can the three live in harmony?

I like my blenny, and won't give him up for the pair - but if I know they can live without the pistol attacking him, I will do all of them.

Does anyone have experience with the three co-existing in the tank?

Tank is 77 gallons. Plenty of places for them to hide, but of course the blenny will eventually scoot in front of their 'layer'

Thoughts?