LPR-Foregrip question

I've already asked Luke, and he's not sure, but I'm curious to know if I'll be able to use my LPR-foregrip as just that, a (air-through, foregrip.) This is without having pneumatics installed.

What should I expect when hooking up my air fittings and playing?

Can I do it; or is it ill advised?

I would think this would be ok. You have an line in from the asa and a line out port to valve. You would just have to remove the nipple for lpr hose and put a cap screw on those. I don't think you would even starve the valve.