If the quick connect looks like this photo, it's def. low pressure and what you'll normally find on RVs. They have a shutoff valve on them so you can't insert the male fitting without the gas being shut off. Note that quick connect fittings for propane on RVs are different than for natural gas as well as compressed air so don't buy the wrong parts. RV quick connects are usually plumbed directly off the line running fore/aft that supplies the fridge, furnace and water heater. You want to remove the regulator on the grill so you don't have two regulators in series.
I removed the regulator on our old Coleman Roadtrip grill and on our current Weber Q. The Coleman was harder to do because of the parts involved. I'd suggest getting a 3/8" diameter hose instead of 1/4" for better flow and also getting one with the rubber type jacket because the hose is much more flexible and easier to coil up than the vinyl/plastic jacketted ones.
